IIT JEE Questions And Answers :: Oscillations And Waves: part2



IIT JEE : Oscillations And Waves QUESTIONS AND ANSWERS :: part2 : 11 to 15

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

11.A mass on the end of a spring undergoes simple harmonic motion with a frequency of 0.5 Hz. If the attached mass is reduced to one quarter of its value, then the new frequency in Hz is

4.5
2.0
0.25
1.0

12.A clock P is based on oscillation of a spring and another clock Q is based on pendulum motion. Both the clocks run at the same rate on Earth. Both the clocks are then taken to a planet having same density as Earth but twice the radius. Then

P will run faster than Q
Q will run faster than P
both will run at the same rates as on Earth
both will run at equal rates but faster than on Earth.

13.The length of a seconds pendulum is approximately

994 mm
99.3 mm
993 mm
9.93 mm

14.The time period of a mass suspended from a spring is 5 s. The spring is cut into four equal and the same mass is now suspended from one of its parts. The period is now

5 s
2.5 s
1.25 s
5 / 16 s

15.A solid copper sphere is suspended from a massless spring. The time period of oscillation of the system is 4 s. The sphere is now completely immersed in a liquid whose density is 1/8th that of brass. The sphere remains in liquid during oscillation. Now the time period is:

4 s
2 s
3 s
none of these

More Oscillations And Waves QUESTIONS AND ANSWERS available in next pages

    Health is the greatest gift, contentment is the greatest wealth -Buddha
A real entrepreneur is somebody who has no safety net underneath them. Henry Kravis