Back to OSCILLATIONS
JEE PHYSICS MCQ: OSCILLATIONS
1
Medium
1 of 1
Understanding
+4 | -1
Assertion (A): When a spring is cut into two
equal parts, spring constant of each piece is
twice that of the original spring.
Reason (R): Spring constant is inversely
proportional to length of the spring.
equal parts, spring constant of each piece is
twice that of the original spring.
Reason (R): Spring constant is inversely
proportional to length of the spring.
View answer and explanation
Correct option: A
(A), (R) are true : (R) is the correct explanation of (A)
Option A ((A), (R) are true : (R) is the correct explanation of (A)) is correct because the spring constant is inversely proportional to the length of the spring, so cutting it in half doubles the spring constant of each piece.
More Questions from OSCILLATIONS
Practice All Chapter MCQs →
Assertion: A particle executing simple harmonic motion comes to rest at the extreme positions.
Reason: The resultant force on the particle is zero at these positions. A particle is subjected simultaneously to two SHM’s one along the -axis and the other along the -axis. The two vibrations are in phase and have unequal amplitudes. The particle will execute A particle is executing SHM with amplitude . When the PE of a particle is one-fourth of its maximum value during the oscillation, its displacement from the equilibrium position will be The displacement, velocity and acceleration in a simple harmonic motion are related as the Assertion: Angular velocity of earth around sun is lesser than the angular velocity of moon about earth.
Reason: Time taken by moon revolve around earth is less than time taken by earth to revolve around sun. A particle is executing . At a displacement its potential energy is and at a displacement its potential energy is . The potential energy of the particle at displacement is
Reason: The resultant force on the particle is zero at these positions. A particle is subjected simultaneously to two SHM’s one along the -axis and the other along the -axis. The two vibrations are in phase and have unequal amplitudes. The particle will execute A particle is executing SHM with amplitude . When the PE of a particle is one-fourth of its maximum value during the oscillation, its displacement from the equilibrium position will be The displacement, velocity and acceleration in a simple harmonic motion are related as the Assertion: Angular velocity of earth around sun is lesser than the angular velocity of moon about earth.
Reason: Time taken by moon revolve around earth is less than time taken by earth to revolve around sun. A particle is executing . At a displacement its potential energy is and at a displacement its potential energy is . The potential energy of the particle at displacement is