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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 oscillate in a uniform magnetic field with time periods in the ratio 1 : 2. The ratio of their magnetic moments is:
a) 1 : 2
b) 1 : 4
c) 2 : 1
d) 4 : 1
Option d – 4 : 1
When oscillations are strongly damped, the amplitude of vibration:
a) Decreases with time
b) Increases with time
c) Remains constant
d) First increases and then decreases
Option a – Decreases with time
Two simple pendulums have lengths in the ratio 9 : 1 and start oscillating together at time t = 0. They will come back in the same phase after the shorter pendulum completes n oscillations. The value of 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 are SET into motion simultaneously. After how many oscillations of the first pendulum will they again swing together?
a) 1 Oscillation
b) 3 oscillations
c) 5 oscillations
d) 4 oscillations
Option c – 5 oscillations
A horizontal platform executes vertical simple harmonic motion with a total displacement of 10 cm. What is the minimum possible time period so that an object placed on it does not lose contact?
a) 0.45 s
b) 4 s
c) 5 s
d) 0.2 s
Option a – 0.45 s
A smooth inclined plane makes an angle of 30° with the horizontal. A Mass of 2.5 kg is attached to a spring fixed at the top of the plane. When the Mass is pulled 2.5 cm up the plane, the spring just becomes slack. If the Mass is 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 performs simple harmonic motion in a magnetic field. If the magnetic field strength is increased, then:
a) The time period decreases
b) The frequency decreases
c) The time period increases
d) The frequency remains unchanged
Option a – The time period decreases
The amplitude of a particle executing SHM is reduced from 20 cm to 10 cm. The percentage decrease in its total energy is:
a) 25%
b) 50%
c) 75%
d) 10%
Option c – 75%
If the length of a simple pendulum is increased by 2%, its time period will:
a) Decrease by 2%
b) Increase by 2%
c) Increase by 1%
d) Decrease by 1%
Option c – Increase by 1%
If the length of a seconds pendulum is increased by 1%, the clock will approximately:
a) Gain 432 seconds per day
b) Lose 432 seconds per day
c) Gain 27 seconds per day
d) Lose 27 seconds per day
Option b – Lose 432 seconds per day
We covered all the solution of nootan Physics Class 12 above in this post for free so that you can practice well for the exam.
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Also, check out:
- Class 12 Physics Objective Question Answer in Hindi
- Pradeep Physics Class 12 Volume 2
- Physics Class 12 Chapter 1 Important Questions in Hindi
