Working Model of Physics for Class 11. We covered all the Working Model of Physics for Class 11 MCQs in this post for free so that you can practice well for the exam.
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Working Model of Physics for Class 11 Objective for Students
Bose-Einstein Condensate is:
(b) the fifth state of matter
(c) plasma
(d) state of condensed matter
Option b – the fifth state of matter
The rate of evaporation of a liquid does not depend upon: ( Working Model of Physics for Class 11 MCQs )
(a) temperature
(b) its surface area exposed to the atmosphere
(c) it’s mass
(d) humidity
Option c – it’s mass
Which one of the following is active transport?
(a) It is the movement of a substance against a diffusion gradient with the use of energy from respiration.
(b) It is the movement of a substance against a diffusion gradient without the use of energy.
(c) It is the movement of a substance against a diffusion gradient with the use of energy from photosynthesis.
(d) It is the movement of a substance along a diffusion gradient with the use of energy from respiration.
Option a – It is the movement of a substance against a diffusion gradient with the use of energy from respiration
Rate of evaporation increases with: ( Working Model of Physics for Class 11 MCQs )
(a) an increase of surface area
(b) an increase in humidity
(c) a decrease in wind speed
(d) a decrease in temperature
Option a – an increase of surface area
If the speed of a moving magnet inside a coil increases, the electric current in the coil:
(a) increases
(b) decreases
(c) reverses
(d) remains the same
Option a – increases
The principle involved in chromatography is: ( Working Model of Physics for Class 11 MCQs )
(a) Absorption
(b) Partition
(c) Solubility
(d) Volatility
Option b – Partition
A car undergoes a uniform circular motion. The acceleration of the car is:
(a) zero
(b) a non-zero constant
(c) a non-zero but not a constant
(d) None of the above
Option c – a non-zero but not a constant
The spring constant of a spring depends on its:
(a) length only
(b) material only
(c) length and its diameter
(d) thickness, its diameter, and its material
Option d – thickness, its diameter, and its material
In a bipolar junction transistor: ( Working Model of Physics for Class 11 MCQs )
(a) all three regions (the emitter, the base, and the collector) have equal concentrations of impurity
(b) the emitter has the least concentration of impurity
(c) the collector has the least concentration of impurity
(d) the base has the least concentration of impurity
Option d – the base has the least concentration of impurity
The pressure exerted by a 760 mm column of mercury at 0°C is known as:
(a) 1 pascal
(b) 1 atmosphere
(c) 1 bar
(d) 1 poise
Option b – 1 atmosphere
Which one of the following physical quantities has the same dimensions as that of Planck’s constant h? ( Working Model of Physics for Class 11 MCQs )
(a) Linear momentum
(b) Angular momentum
(c) Force
(d) Potential energy
Option a – Linear momentum
In total internal reflection, the light travels from:
(a) rarer to denser medium, and it occurs with no loss of intensity
(b) denser to rarer medium, and it occurs with no loss of intensity
(c) rarer to denser medium, and it occurs with a loss of intensity
(d) denser to rarer medium, and it occurs with a loss of intensity
Option b – denser to rarer medium, and it occurs with no loss of intensity
Liquids and gases never show: ( Working Model of Physics for Class 11 MCQs )
(a) diamagnetic property
(b) paramagnetic property
(c) ferromagnetic property
(d) electromagnetic property
Option c – ferromagnetic property
Light travels in a straight line (rectilinear propagation of light). This statement does hold if the medium of travel for light is:
(a) of variable refractive index
(b) made up of slabs of different refractive indices
(c) homogeneous and transparent
(d) inhomogeneous and transparent
Option c – homogeneous and transparent
Which one of the following statements is correct? The velocity of sound: ( Working Model of Physics for Class 11 MCQs )
(a) does not depend upon the nature of the media
(b) is maximum in gases and minimum in liquids
(c) is maximum in solids and minimum in liquids
(d) is maximum in solids and minimum in gases
Option d – is maximum in solids and minimum in gases
Which one of the following statements is not correct?
(a) The response of the ear to the sound of increasing intensity is approximately logarithmic.
(b) The sensitivity of the human ear does not vary with the frequency of the sound.
(c) When two or more waves verse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave.
(d) Longitudinal waves can travel in all media solids, liquids, and gases.
Option b – The sensitivity of the human ear does not vary with the frequency of the sound
The rate of change of momentum of a body is equal to the resultant: ( Working Model of Physics for Class 11 MCQs )
(a) energy
(b) power
(c) force
(d) impulse
Option c – force
After a hot sunny day, people sprinkle water on the roof-top because:
(a) water helps air around the roof-top to absorb the heat instantly
(b) water has a lower specific heat capacity
(c) water is easily available
(d) water has a large latent heat of vaporization
Option d – water has a large latent heat of vaporization
The SI unit of mechanical power is:
(a) Joule
(b) Watt
(c) Newton-second
(d) Joule-second
Option b – Watt
Two systems are said to be in thermal equilibrium if and only if: ( Working Model of Physics for Class 11 MCQs )
(a) there can be a heat flow between them even if they are at different temperatures
(b) there cannot be a heat flow between them even if they are at different temperatures
(c) there is no heat flow between them
(d) their temperatures are slightly different
Option c – there is no heat flow between them
A myopic person has a power of -1.25 Dioptre. What is the focal length and nature of his lens?
(a) 50 cm and convex lens
(b) 80 cm and convex lens
(c) 50 cm and concave lens
(d) 80 cm and concave lens
Option d – 80 cm and concave lens
Which one of the following statements about a bar magnet is correct?
(a) The pole strength of the north pole of a bar magnet is larger than that of the south pole
(b) When a piece of a bar magnet is bisected perpendicular to its axis, the north and south poles get separated
(c) When a piece of a bar magnet is bisected perpendicular to its axis, two new bar magnets are formed
(d) The poles of a bar magnet are unequal in magnitude and opposite in nature
Option c – When a piece of a bar magnet is bisected perpendicular to its axis, two new bar magnets are formed
Which one of the following statements is not correct? ( Working Model of Physics for Class 11 MCQs )
(a) Atoms of different elements may have the same mass numbers
(b) Atoms of an element may have different mass numbers
(c) All the atoms of an element have the same number of protons
(d) All the atoms of an element will always have the same number of neutrons
Option d – All the atoms of an element will always have the same number of neutrons
Matter around us can exist in three different states, namely, solid, liquid, and gas. The correct order of their compressibility is:
(a) Liquid < Gas < Solid
(b) Solid < Liquid < Gas
(c) Gas < Liquid < Solid
(d) Solid < Gas < Liquid
Option b – Solid
The temperature at which a solid melts to become a liquid at atmospheric pressure is called its melting point. The melting point of a solid is an indication of: ( Working Model of Physics for Class 11 MCQs )
(a) strength of the intermolecular forces of attraction
(b) strength of the intermolecular forces of repulsion
(d) molecular size
Option a – strength of the intermolecular forces of attraction
Which one of the following statements is not correct?
(a) Sound waves in gases are longitudinal in nature
(b) Sound waves having a frequency below 20 Hz are known as ultrasonic waves
(c) Sound waves having higher amplitudes are louder
(d) Sound waves with high audible frequencies are sharp
Option b – Sound waves having a frequency below 20 Hz are known as ultrasonic waves
A pencil is placed upright at a distance of 10 cm from a convex lens of focal length 15 cm. The nature of the image of the pencil will be:
(a) real, inverted, and magnified
(b) real, erect, and magnified
(c) virtual, erect, and reduced
(d) virtual, erect, and magnified
Option c – virtual, erect, and reduced
The impulse on a particle due to a force acting on it during a given time interval is equal to the change in its:
(a) force
(b) momentum
(c) work done
(d) energy
Option b – momentum
Which one of the following is not a form of stored energy?
(a) Nuclear energy
(b) Potential energy
(c) Electrical energy
(d) Chemical energy
Option a – Nuclear energy
Along a streamlined flow of fluid:
(a) the velocity of all fluid particles at a given instant is constant
(b) the speed of a fluid particle remains constant
(c) the velocity of all fluid particles crossing a given position is constant
(d) the velocity of a fluid particle remains constant
Option d – the velocity of a fluid particle remains constant
A man weighing 70 kg is coming down in a lift. If the cable of the lift breaks suddenly, the weight of the man would become:
(a) 70 kg
(b) 35 kg
(c) 140 kg
(d) Zero
Option d – Zero
When a solid is heated, it turns directly into a gas. This process is called:
(a) Condensation
(b) Evaporation
(c) Sublimation
(d) Diffusion
Option c – Sublimation
An atom of carbon has 6 protons. Its mass number is 12. How many neutrons are present in an atom of carbon?
(a) 12
(b) 6
(c) 10
(d) 14
Option b – 6
The position, relative size, and nature of the image formed by a concave lens for an object placed at infinity are respectively:
(a) at focus, diminished, and virtual
(b) at focus, diminished, and real
(c) between focus and optical center, diminished, and virtual
(d) between focus and optical center, magnified, and real
Option a – at focus, diminished, and virtual
Two layers of cloth of equal thickness provide a warmer covering than a single layer of cloth with double the thickness. Why?
(a) Because of the air encapsulated between two layers
(b) Since the effective thickness of two layers is more
(c) The fabric of the cloth plays the role
(d) Waving of the cloth plays the role
Option a – Because of the air encapsulated between two layers
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be:
(a) either plane or convex
(b) plane only
(c) concave
(d) convex only
Option a – either plane or convex
A mobile phone charger is:
(a) an inverter
(b) a UPS
(c) a step-down transformer
(d) a step-up transformer
Option c – a step-down transformer
In a cricket match, while catching a fast-moving ball, a fielder on the ground gradually pulls his hands backward with the moving ball to reduce the velocity to zero. The act represents:
(a) Newton’s first law of motion
(b) Newton’s second law of motion
(c) Newton’s third law of motion
(d) the law of conservation of energy
Option b – Newton’s second law of motion
You are asked to jog in a circular track of a radius of 35 meters. Right after one complete round on the circular track, your displacement and the distance covered by you are respectively:
(a) zero and 220 meters
(b) 220 meters and zero
(c) zero and 110 meters
(d) 110 meters and 220 meters
Option a – zero and 220 meters
If a scientist reads an ambient temperature of 273 K in the laboratory, what will a doctor’s thermometer read it?
(a) 0 degrees Fahrenheit
(b) 32 degrees Fahrenheit
(c) 99 degrees Fahrenheit
(d) -100 degrees Fahrenheit
Option b – 32 degrees Fahrenheit
Magnesium is used in:
(a) fireworks to make a bright white light
(b) gemstones in jewelry
(c) examination of the alimentary canal of the patient
(d) purification of water
Option a – fireworks to make a bright white light
Which one of the following types of radiations has the smallest wavelength?
(a) Microwaves
(b) Infrared
(c) Visible light
(d) X-rays
Option d – X-rays
The instrument used for detecting the presence of electric current in a circuit is:
(a) Refractometer
(b) Galvanometer
(c) Viscometer
(d) Diffractometer
Option d – Galvanometer
Which of the following statements is NOT correct regarding the travel of sound waves?
(a) Sound waves can travel through water
(b) Sound waves can travel through the air
(c) Sound waves can travel through steel
(d) Sound waves can travel through a vacuum
Option d – Sound waves can travel through a vacuum
The cost of energy to operate an industrial refrigerator that consumes 5 kW of power working 10 hours per day for 30 days will be (Given that the charge per kWh of energy = ₹ 4):
(a) ₹ 600
(b) ₹ 6,000
(c) ₹ 1,200
(d) ₹ 1,500
Option b – ₹ 6,000
Two planets orbit the Sun in circular orbits, with their radius of orbit as R1 = T and R2 = 4R. The ratio of their periods (T1/T2) around the Sun will be:
(a) 1/16
(b) 1/8
(c) 1/4
(d) 1/2
Option b – 1/8
Light of uniform intensity impinges perpendicularly on a totally reflecting surface. If the area of the surface is halved, the radiation force on it will become:
(a) Double
(b) Half
(c) Four times
(d) One-fourth
Option b – Half
Which one of the following is not true about the image formed by a plane mirror?
(a) It is of the same size as the subject.
(b) It is laterally inverted.
(c) It is a real image.
(d) It is formed as far behind the mirror as the object is in front.
Option c – It is a real image
In a periscope, the two plane mirrors are kept:
(a) Parallel to each other
(b) Perpendicular to each other
(c) At an angle of 60° with each other
(d) At an angle of 45° with each other
Option a – Parallel to each other
Which one of the following combinations of source and screen would produce the sharpest shadow of an opaque object?
(a) A point source and an opaque screen
(b) An extended source and an opaque screen
(c) A point source and a transparent screen
(d) An extended source and a transparent screen
Option a – A point source and an opaque screen
If x is the temperature of a system in Kelvin and y is the temperature of the system in °C, then the correct relation between them is:
(a) x = 273-y
(b) x = 273 + y
(c) x = 173 + y
(d) x = 173-y
Option b – x = 273 + y
The resistivity ñ of a material may be expressed in units of:
(a) ohm
(b) ohm/cm
(c) ohm-cm
(d) ohm-cm²
Option c – ohm-cm
The electromagnetic waves, which are used for satellite communication, are:
(a) infrared radiations
(b) ultraviolet radiations
(c) radio waves
(d) visible lights
Option c – radio waves
The property of the sound waves that determines the pitch of the sound is its:
(a) Frequency
(b) Amplitude
(c) Wavelength
(d) Intensity
Option a – Frequency
Which one of the following is not a property of X-rays?
(a) They are deflected by electric fields.
(b) They are not deflected by magnetic fields.
(c) They have a high penetration length in matter.
(d) Their wavelength is much smaller than that of visible light.
Option a – They are deflected by electric fields
We covered all the working model of physics for class 11 mcqs above in this post for free so that you can practice well for the exam.
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