Solution of Nootan Physics Class 12. We covered all the Solution of Nootan Physics Class 12 in this post for free so that you can practice well for the exam.
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Nootan Physics Class 12 Quiz Questions for Students
Two identical bar magnets vibrating in a uniform magnetic field have periods in the ratio 1 : 2. Their magnetic moments are in the ratio :
(A) 1 : 2
(B) 1 : 4
(C) 2 : 1
(D) 4 : 1
Option d – 4 : 1
If the oscillations are highly damped, the amplitude of oscillations :
(A) decreases with time
(B) increases with time
(C) remains constant with time
(D) first increases and then decreases
Option a – decreases with time
Two simple pendulums of length in the ratio 9 : 1 are started at time t = 0. They will again be in phase after the shorter pendulum has made n oscillations, the n is :
(A) 2
(B) 1
(C) 3/2
(D) 1/2
Option c – 3/2
Two simple pendulums of lengths 1.44 m and 1 m lengths start swinging together. After how many oscillations of the first pendulum they will again start swinging together?
(A) 1 oscillation
(B) 3 oscillation
(C) 5 oscillation
(D) 4 oscillation
Option c – 5 oscillation
A horizontal platform moves up and down simple harmonically the total vertical movement being 10 cm What is the shortest period permissible if the object resting on the platform is to remain in contact with it throughout the motion?
(A) 0.45 s
(B) 4 s
(C) 5 s
(D) 0.2 s
Option a – 0.45 s
A smooth inclined plane having an angle of inclination of 30° with horizontal has 2.5 kg mass held by a spring which is fixed at the upper end. If the mass is taken 2.5 cm up along the surface of the inclined plane, the tension in the spring reduces to zero. If the mass is now released the angular frequency of oscillation is :
(A) 7 rad/s
(B) 14 rad/s
(C) 0.7 rad/s
(D) 1.4 rad/s
Option b – 14 rad/s
A magnetic needle is executing SHM in a magnetic field when a magnetic field is increased :
(A) The period decreases
(B) The frequency decreases
(C) The period increases
(D) The frequency does not changes.
Option a – The period decreases
The amplitude of particles in SHM decreases from 20 cm to 10 cm. The percentage decrease in its total energy :
(A) 25%
(B) 50%
(C) 75%
(D) 10%
Option c – 75%
If the length of a simple pendulum is increased by 2% then the time period :
(A) Decreases by 2%
(B) Increases by 2%
(C) Increases by 1%
(D) Decreases by 1%
Option c – Increases by 1%
The length of the second’s pendulum is increased by 1% the clock approximately :
(A) Gains 432 s per day
(B) Loses 432 s per day
(C) Gain 27 s per day
(D) Loses 27 s per day
Option b – Loses 432 s per day
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