12th Std Physics Important Questions

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12th Std Physics Important Questions. We covered all the 12th Std Physics Important Questions in this post for free so that you can practice well for the exam.

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12th Std Physics MCQs for Students

In a resonance tube experiment, the first resonance is obtained for 10 cm of the air column and the second for 32 cm, the end correction for this apparatus is equal to :

In a resonance tube using a tuning fork of frequency 325 Hz, the first two resonance lengths are observed at 25.4 cm and 77.4 cm. The speed of sound in air is :

In a resonance tube experiment, a tuning fork resonates with an air column 12.5 cm long and again resonates when it is 40 cm long. Then the end correction is :

When an air column at 15 °C and a tuning fork are sounded together then 4 beats/second are produced. The frequency of the fork is less than that of the air column. When the temperature falls to 10 °C. Then the beat frequency decreases by one. The frequency of the fork will be:

A closed organ pipe, of length 1.2 m and filled with gas is resonated in its fundamental mode with some fork. Another open pipe of the same length but filled with air resonates with the same fork. The room temperature is 40 °C. If the speed of sound in air at 40 °C is 360 m/s, then the speed of sound in gas at 40 °C will be :

A resonance tube of length 1 m is resonated with a tuning fork of frequency 300 Hz. If the velocity of sound in air is 330 m/s then the number of harmonics produced in the tube will be :

In a resonance tube, using a tuning fork of frequency 325 Hz, the first two resonance lengths are observed at 25.4 cm and 77.4 cm. The end correction is :

A tuning fork of frequency 500 Hz is sounded on a resonance tube, the first and second resonance is obtained at 17 cm and 52 cm. The velocity of sound in m/s is :

In the resonance tube air column of length, 20 cm resonates with a tuning fork of frequency 250 Hz. The speed of the sound in the air is :

On producing the waves of frequency 1000 Hz in a Kundt’s tube, the total distance between 6 successive nodes is 85 cm, speed of sound in the gas, filled in the tube is :

If a resonance tube is sounded with a tuning fork of frequency 256 Hz, resonance occurs at 35 cm and 105 cm. The velocity of sound is about

For a resonance tube, the air columns for the first and the second resonances differ in length by 31.5 cm. The wavelength of the wave is :

In a resonance tube, the first resonance is obtained when the level of water in the tube is 16 cm from the open end. Neglecting end correction, the next resonance will be obtained, when the level of water from the open end is :

12th Std Physics MCQs for Students

In a resonance tube experiment, the first resonance is obtained for 10 cm of the air column and the second for 32 cm, the end correction for this apparatus is equal to :

(A) 0.5 cm

(B) 1 cm

(D) 2 cm

Option b – 1 cm

In a resonance tube using a tuning fork of frequency 325 Hz, the first two resonance lengths are observed at 25.4 cm and 77.4 cm. The speed of sound in air is :

(A) 318 m/s

(B) 338 m/s

(D) 378 m/s

Option b – 338 m/s

In a resonance tube experiment, a tuning fork resonates with an air column 12.5 cm long and again resonates when it is 40 cm long. Then the end correction is :

(A) 1.25 cm

(B) 2.50 cm

(D) 2.00 cm

Option a – 1.25 cm

When an air column at 15 °C and a tuning fork are sounded together then 4 beats/second are produced. The frequency of the fork is less than that of the air column. When the temperature falls to 10 °C. Then the beat frequency decreases by one. The frequency of the fork will be:

(A) 106 Hz

(B) 110 Hz

(D) 118 Hz

Option b – 110 Hz

A closed organ pipe, of length 1.2 m and filled with gas is resonated in its fundamental mode with some fork. Another open pipe of the same length but filled with air resonates with the same fork. The room temperature is 40 °C. If the speed of sound in air at 40 °C is 360 m/s, then the speed of sound in gas at 40 °C will be :

(A) 341.5 m/s

(B) 637 m/s

(D) 720 m/s

Option d – 720 m/s

A resonance tube of length 1 m is resonated with a tuning fork of frequency 300 Hz. If the velocity of sound in air is 330 m/s then the number of harmonics produced in the tube will be :

(A) 1

(B) 2

(D) 4

Option b – 2

In a resonance tube, using a tuning fork of frequency 325 Hz, the first two resonance lengths are observed at 25.4 cm and 77.4 cm. The end correction is :

(A) 0.2 cm

(B) 0.3 cm

(D) 0.6 cm

Option d – 0.6 cm

A tuning fork of frequency 500 Hz is sounded on a resonance tube, the first and second resonance is obtained at 17 cm and 52 cm. The velocity of sound in m/s is :

(A) 170 m/s

(B) 350 m/s

(D) 850 m/s

Option b – 350 m/s

In the resonance tube air column of length, 20 cm resonates with a tuning fork of frequency 250 Hz. The speed of the sound in the air is :

(A) 300 m/s

(B) 200 m/s

(D) 75 m/s

Option b – 200 m/s

On producing the waves of frequency 1000 Hz in a Kundt’s tube, the total distance between 6 successive nodes is 85 cm, speed of sound in the gas, filled in the tube is :

(A) 330 m/s

(B) 340 m/s

(D) 300 m/s

Option b – 340 m/s

If a resonance tube is sounded with a tuning fork of frequency 256 Hz, resonance occurs at 35 cm and 105 cm. The velocity of sound is about

(A) 360 m/s

(B) 512 m/s

(D) 36 m/s

Option a – 360 m/s

For a resonance tube, the air columns for the first and the second resonances differ in length by 31.5 cm. The wavelength of the wave is :

(A) 15.75 cm

(B) 31.5 cm

(D) 126.0 cm

Option c – 63.0 cm

In a resonance tube, the first resonance is obtained when the level of water in the tube is 16 cm from the open end. Neglecting end correction, the next resonance will be obtained, when the level of water from the open end is :

(A) 24 cm

(B) 32 cm

(D) 64 cm

Option c – 48 cm

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12th Std Physics MCQs for Students

In a resonance tube experiment, the first resonance is obtained for 10 cm of the air column and the second for 32 cm, the end correction for this apparatus is equal to :

In a resonance tube using a tuning fork of frequency 325 Hz, the first two resonance lengths are observed at 25.4 cm and 77.4 cm. The speed of sound in air is :

In a resonance tube experiment, a tuning fork resonates with an air column 12.5 cm long and again resonates when it is 40 cm long. Then the end correction is :

When an air column at 15 °C and a tuning fork are sounded together then 4 beats/second are produced. The frequency of the fork is less than that of the air column. When the temperature falls to 10 °C. Then the beat frequency decreases by one. The frequency of the fork will be:

A resonance tube of length 1 m is resonated with a tuning fork of frequency 300 Hz. If the velocity of sound in air is 330 m/s then the number of harmonics produced in the tube will be :

In a resonance tube, using a tuning fork of frequency 325 Hz, the first two resonance lengths are observed at 25.4 cm and 77.4 cm. The end correction is :

A tuning fork of frequency 500 Hz is sounded on a resonance tube, the first and second resonance is obtained at 17 cm and 52 cm. The velocity of sound in m/s is :

In the resonance tube air column of length, 20 cm resonates with a tuning fork of frequency 250 Hz. The speed of the sound in the air is :

On producing the waves of frequency 1000 Hz in a Kundt’s tube, the total distance between 6 successive nodes is 85 cm, speed of sound in the gas, filled in the tube is :

If a resonance tube is sounded with a tuning fork of frequency 256 Hz, resonance occurs at 35 cm and 105 cm. The velocity of sound is about

For a resonance tube, the air columns for the first and the second resonances differ in length by 31.5 cm. The wavelength of the wave is :

In a resonance tube, the first resonance is obtained when the level of water in the tube is 16 cm from the open end. Neglecting end correction, the next resonance will be obtained, when the level of water from the open end is :

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