Arihant DC Pandey Physics Class 11. We covered all the Arihant DC Pandey Physics Class 11 MCQs in this post for free so that you can practice well for the exam.
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Arihant DC Pandey Physics Class 11 Objective for Students
Which one of the following statements regarding lenses is not correct?
(a) A convex lens produces both real and virtual images.
(b) A concave lens produces both real and virtual images.
(c) A convex lens can produce images equal, greater, and smaller than the size of the object.
(d) A concave lens always produces images smaller than the size of the object.
Option b – A concave lens produces both real and virtual images
A lens, immersed in a liquid becomes invisible when ( Arihant DC Pandey Physics MCQ )
(a) the focal length of the lens is zero
(b) the focal length of the lens is finite
(c) the refractive index of the lens is less than the refractive index of the liquid
(d) the refractive index of the lens is equal to the refractive index of the liquid.
Option d – the refractive index of the lens is equal to the refractive index of the liquid
In a magnifying glass ……… lens is used.
(a) Convex
(b) Concave
(c) Plano concave
(d) Plano convex
Option a – Convex
Two glass lenses of the same focal length, one being convex and the other concave, are kept in contact, the combination will act as ( Arihant DC Pandey Physics MCQ )
(a) convergent lens
(b) divergent lens
(c) plane glass sheet
(d) mirror
Option c – plane glass sheet
An optical illusion which occurs mainly in deserts during hot summer is based on the principle of
(a) reflection
(b) interference
(c) dispersion
(d) total internal reflection
Option d – total internal reflection
Which one of the following processes is responsible for the glittering of an air bubble rising through water? ( Arihant DC Pandey Physics MCQ )
(a) Reflection of light
(b) Refraction of light
(c) Total internal reflection of light
(d) Scattering of light
Option c – Total internal reflection of light
Which of the following is not an example of the refraction of light?
(a) Twinkling effect of stars
(b) Mirages
(c) Lateral inversion
(d) Bending of light while passing through a medium
Option c – Lateral inversion
A lemon kept in water in a glass tumbler appears to be larger than its actual size. This is because of ( Arihant DC Pandey Physics MCQ )
(a) the reflection of light.
(b) scattering of light.
(c) refraction of light
(d) polarization of light.
Option c – refraction of light
Why does a water tank appear shallower when viewed from the top?
(a) Due to reflection
(b) Due to refraction
(c) Due to diffraction
(d) Due to total internal reflection
Option b – Due to refraction
The twinkling of stars is due to ( Arihant DC Pandey Physics MCQ )
(a) the large distance of stars and storms in the air.
(b) the rotation of the Earth.
(c) the large size of stars.
(d) the large distance of stars and fluctuations in the density of air.
Option d – the large distance of stars and fluctuations in the density of air
Due to atmospheric refraction, sunrise is advanced, and sunset is delayed by about
(a) 1 minute
(b) 2 minutes
(c) 4 minutes
(d) 3 minutes
Option b – 2 minutes
The Sun is seen a little before it rises and for a short while after it sets. This is because of ( Arihant DC Pandey Physics MCQ )
(a) total internal reflection
(b) atmospheric refraction
(c) apparent shift in the direction of the Sun
(d) dispersion
Option b – atmospheric refraction
The bending of light rays in a denser medium is termed as
(a) Reflection
(b) Dispersion
(c) Refraction
(d) Deflection
Option c – Refraction
Which one of the following instruments is used for measuring the moisture content of air? ( Arihant DC Pandey Physics MCQ )
(a) Hydrometer
(b) Hygrometer
(c) Hypsometer
(d) Pycnometer
Option b – Hygrometer
If the door of a refrigerator is kept open, then which of the following is true?
(a) The room is cooled.
(b) The room is heated.
(c) Room is either cooled or heated
(d) The room is neither cooled nor heated
Option b – The room is heated
During the melting of a solid, its temperature ( Arihant DC Pandey Physics MCQ )
(a) decreases.
(b) increases.
(c) may increase or decrease depending on the nature of the solid.
(d) does not change.
Option d – does not change
Humidity refers to
(a) the direction of the wind.
(b) temperature of the air.
(c) moisture content of the air.
(d) the pressure of the air.
Option c – moisture content of the air
The force acting on an object perpendicular to the surface is called ( Arihant DC Pandey Physics MCQ )
(a) pressure
(b) work
(c) thrust
(d) friction
Option c – thrust
The bulk modulus of elasticity is defined as
(a) the ratio of longitudinal stress to the longitudinal strain within the elastic limit.
(b) the ratio of normal stress to the volumetric strain within the elastic limit.
(c) the ratio of shearing stress to the shearing strain within the elastic limit.
(d) None of the above
Option b – the ratio of normal stress to the volumetric strain within the elastic limit
The modulus of rigidity of a liquid is ( Arihant DC Pandey Physics MCQ )
(a) zero
(b) infinite
(c) one
(d) None of the above
Option a – zero
The spring balance works on the principle of…
(a) Boyle’s Law
(b) Hooke’s Law
(c) Bernoulli’s Principle
(d) Pascal’s Law
Option b – Hooke’s Law
The Young’s modulus for a perfectly rigid body is
(a) zero
(b) one
(c) infinite
(d) None of the above
Option c – infinite
In an experiment to determine the Young’s modulus of a material of a wire, the suspended mass is doubled. Then Young’s modulus of the wire
(a) becomes double.
(b) becomes four times.
(c) remain unchanged.
(d) becomes half.
Option c – remain unchanged
De-Broglie wavelength of an electron beam accelerated through a potential difference of 60 volts is
a. 1.49 eV
b. 1.58 eV
c. 149 eV
d. 1.52 eV
Option a – 1.49 eV
For a non-relativistic free particle, the phase velocity is equal to
a. double the group velocity
b. half of the group velocity
c. group velocity
d. a quarter of the group velocity
Option c – group velocity
According to the Wilson-Sommerfeld quantization rule, only those orbits or stationary states are permissible in which the value of each phase integral is an integral multiple of
a. Planck’s constant
b. de-Broglie constant
c. Rydberg’s constant
d. None of the above
Option a – Planck’s constant
If 20% of a radioactive isotope decays in 5 days, then the amount of the original material left after 15 days will be approximately
a. 50%
b. 60%
c. 20%
d. none of the above
Option a – 50%
A proton is accelerated through a potential difference of 200 volts. The accelerating voltage required to have the same wavelength associated with an alpha particle would be
a. 200 volts
b. 50 volts
c. 100 volts
d. 25 volts
Option d – 25 volts
90% of the active nuclei present in a radioactive sample are found to remain undecayed after 1 day. The percentage of undecayed nuclei left after two days will be
a. 80%
b. 79%
c. 82%
d. 85%
Option a – 80%
The inductive reactance (Wh) of a coil is expressed in
a. Ampere
b. Volt
c. Ohm
d. Weber
Option c – Ohm
The ratio of e/m of a proton and e/m of an alpha particle is
a. 2 : 1
b. 1 : 2
c. 1 : 4
d. 1 : 1
Option a – 2 : 1
The forbidden energy gap of Ge crystal at 0°K is
a. 0.72 eV
b. 0.072 eV
c. 1.05 eV
d. 1 eV
Option a – 0.72 eV
The current that results from thermoionic emission is known as
a. Thermoionic current
b. Induced current
c. Photo-electric current
d. None of the above
Option a – Thermoionic current
Transistor stands for
a. Transfer power
b. Transfer voltage
c. Transfer resistance
d. Transfer current
Option a – Transfer power
Crystal diodes as compared to vacuum diodes are
a. smaller in size
b. lighter
c. efficient
d. all of these
Option d – all of these
The mutual characteristics of a triode valve can be obtained by plotting
a. Plate current and potential
b. Grid current and plate potential
c. Plate current and grid voltage
d. Grid current and grid potential
Option a – Plate current and potential
An N-type semiconductor has
a. Electrons in excess
b. Both holes and electrons in excess
c. Holes in excess
d. None of the above
Option a – Electrons in excess
If an object dropped from a height of 200 meters at latitude 45°, then the magnitude of deflection is:
a. 0.0439 meters
b. 0.0697 meters
c. 2.09 meters
d. None
Option a – 0.0439 meters
A thin ring of mass 2.7 kg and radius 8 cm rotates about an axis through its center and perpendicular to the plane of the ring at 1.5 rev/sec. Then the kinetic energy (K.E) of the ring is:
a. 0.56 J
b. 0.76 J
c. 1.2 J
d. 1.98 J
Option b – 0.76 J
The rotational K.E of a 25 kg wheel rotating at 6 rev/sec, if the radius of gyration of the wheel is 0.22 m is:
a. 250 J
b. 410 J
c. 860 J
d. 1192 J
Option c – 860 J
An electric motor runs at 900 rev/min and delivers 2 Hp. Then the torque it delivers (1 Hp = 746 W) is:
a. 15.8 N-m
b. 10.9 N-m
c. 21.9 N-m
d. 82 N-m
Option a – 15.8 N-m
A particle is moving under a central force about a fixed center of force. Choose the correct statement:
a. The motion of the particle is always on a circular path.
b. Its angular momentum is conserved.
c. Its kinetic energy remains constant.
d. None
Option b – Its angular momentum is conserved
The mean distance of a mass from the sun is 5.242 times the distance of the Earth from the sun. Then the period of revolution of the mass around the sun is:
a. 1-year
b. 1.88 years
c. 5.72 years
d. 1.5 years
Option b – 1.88 years
An example of a non-central force is:
a. Pseudo force
b. Censor force
c. Coriolis force
d. None
Option b – Censor force
The transverse acceleration of a body in a central force field is:
a. Zero
b. Non-zero
c. Applicable
d. None
Option a – Zero
Weightlessness experienced while orbiting the Earth in space-ships is the result of:
a. Inertia
b. Acceleration
c. Zero gravity
d. Center of gravity
Option b – Acceleration
The relay satellite transmits the TV program continuously from one part of the world to another because it:
a. Period is greater than the period of rotation of Earth
b. The period is less than the period of rotation of Earth
c. The period is equal to the period of rotation of Earth
d. Mass is less than the mass of Earth
Option c – The period is equal to the period of rotation of Earth
In a planetary orbit, perihelion is the point of:
a. Smallest distance from the sun
b. Largest distance from the sun
c. Unknown distance from the sun
d. Smallest distance from the moon
Option a – Smallest distance from the sun
A person who is colorblind cannot distinguish between
(a) Black and yellow
(b) Red and green
(c) Yellow and white
(d) Green and blue
Option b – Red and green
The minimum distance of clear vision for a normal healthy eye of a human being is supposed to be
(a) 50 cm
(b) 10 cm
(c) 15 cm
(d) 25 cm
Option d – 25 cm
The focal length of the lens of a normal human eye is about
(a) 25 cm
(b) 1 m
(c) 2.5 mm
(d) 2.5 cm
Option d – 2.5 cm
Which one of the following statements is not correct?
(a) The human eye is a refracting system containing a diverging lens.
(b) The retina of the human eye contains millions of light-sensitive cells, called rods and cones, which convert the light into electrical messages.
(c) Every image that is focused on the retina is upside down.
(d) We need both eyes to judge the relative positions of objects accurately.
Option a – The human eye is a refracting system containing a diverging lens
To remove the defect of long-sightedness, one uses
(a) Concave lens
(b) Convex mirror
(c) Convex lens
(d) Concave mirror
Option c – Convex lens
In long-sightedness, images are formed
(a) on the retina
(b) in front of the retina
(c) behind the retina
(d) on the blind spot
Option c – behind the retina
Rajat has hypermetropia. What type of lens will the ophthalmologist recommend to correct his vision?
(a) Bifocal
(b) Concave
(c) Progressive
(d) Convex
Option d – Convex
A person is unable to read a newspaper without his glasses. He is most probably suffering from
(a) myopia
(b) presbyopia
(c) astigmatism
(d) hypermetropia
Option b – presbyopia
The lens type commonly used for correcting presbyopia is
(a) bifocal lens
(b) cylindrical lens
(c) convex lens
(d) concave lens
Option a – bifocal lens
The energy of a photon, whose momentum is 10 MeV/c, where c is the speed of light, is given by
(a) 10 MeV
(b) 100 MeV
(c) 1 MeV
(d) 0.1 MeV
Option a – 10 MeV
An electron and a proton starting from rest are accelerated through a potential difference of 1000 V. Which one of the following statements in this regard is correct?
(a) The kinetic energy of both the particles will be different.
(b) The speed of the electron will be higher than that of the proton.
(c) The speed of the proton will be higher than that of the electron.
(d) The speed of the electron and the proton will be equal.
Option b – The speed of the electron will be higher than that of the proton
The de-Broglie wavelength associated with a moving particle is
(a) directly proportional to its mass.
(b) directly proportional to its energy.
(c) directly proportional to its momentum.
(d) inversely proportional to its momentum.
Option d – inversely proportional to its momentum
The electrons are emitted in the photoelectric effect from a metal surface
(a) only if the frequency of the incident radiation is above a certain threshold value.
(b) only if the temperature of the surface is high.
(c) at a rate that is independent of the nature of the metal.
(d) with a maximum velocity proportional to the frequency of the incident radiation.
Option a – only if the frequency of the incident radiation is above a certain threshold value
The light is composed of small particles, called ……
(a) proton
(b) electron
(c) photon
(d) alpha particle
Option c – photon
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Also, check out:
- HBSE 11th Class Previous Year Question Paper Physics
- Focus Guide for 11th Physics
- Class 11 Physics Syllabus Bihar Board
