Physics

1. The equation of displacement of two waves are given as

y₁ = 10 sin (3πt + π/3)

y² = 5 (sin 3πt + √3 cos 3πt)

Then, the ratio of their amplitude will be:

1:1

None of these

1:2

2:1

Question 1 of 15

2. Simple pendulum is executing simple harmonic motion with time period T. If the length of the pendulum is increased by 21%, then the increase in the time period of the pendulum of the increased length is:

22%

10%

13%

50%

Question 2 of 15

3. Two identical springs of spring constant k are connected in series and parallel as shown in figure. A mass M is suspended from them.

The ratio of their frequencies of vertical oscillation will be:

2:1

4:1

1:4

1:2

Question 3 of 15

4. Standing waves are produced in 10 m long stretched string. If the string vibrates in 5 segments and wave velocity is 20 m/s then its frequency will be:

4 Hz

10 Hz

5 Hz

2 Hz

Question 4 of 15

5. A horizontal platform with an object placed on it is executing simple harmonic motion in the vertical direction. The amplitude of oscillation is 3.92 x 10⁻³m. What should be the least period of these oscillations, so that the object is not detached from the platform?

0.145 sec

0.1256 sec

0.1556 sec

0.1356 sec

Question 5 of 15

6. The tension in a piano wire is 10 N. The tension in a piano wire to produce a node of double frequency is:

40 N

120 N

10 N

20 N

Question 6 of 15

7. The equation of a travelling wave is y = 60 cos (1800t – 6x) Where y is in microns, t in second and x in meter. The ratio of maximum particle velocity to the velocity of wave propagation is:

3.6 x 10⁻⁴

3.6 x 10⁻⁶

None of these

3.6 x 10⁻⁸

Question 7 of 15

8. A particle execute simple harmonic motion with an angular velocity of 3.5 rad/ sec and maximum acceleration 7.5 m/s². The amplitude of oscillation will be:

0.53 cm

0.28 m

0.61 m

0.36 m

Question 8 of 15

9. If the time period of oscillation of mass m suspended from a spring is 2 sec, the time period of mass 4 m will be:

4 sec

3 sec

T sec

2 sec

Question 9 of 15

10. If the vibrations of a string are to be increased be a factor of two, then tension in the string should be made:

Twice

Four times

Half

Eight times

Question 10 of 15

11. An object producing a pitch of 1200 Hz is moving with a velocity of 50 m/s towards a stationary person. The velocity of sound is 350 m/s. The frequency of sound heard by the stationary person is:

1050 Hz

1250 Hz

700 Hz

1400 Hz

Question 11 of 15

12. A sings with a frequency (n) and B sings with a frequency 1/8 that of A. If the energy remains the same and the amplitude of A is a, then amplitude of B will be:

Question 12 of 15

13. Which one of the following statement is not correct for a particle executing S.H.M?

Total energy of the particle always remains the same

Restoring force is always directed towards a fixed point

Acceleration of the particle is minimum at the mean position

Restoring force is maximum at the extreme position

Question 13 of 15

14. At which temperature velocity if sound (at 27°C) doubles?

927°C

54°C

327°C

-123°C

Question 14 of 15

15. Newton’s formula for the velocity of sound in gas is:

v = √2P/ρ

v = 2/3 √P/ρ

v = √ρ/P

v = √P/ρ

Question 15 of 15

Test Name	Oscillations and Waves MCQs Test
Subject	Physics
Test Type	MCQs
Total Question	15
Total Marks	30
Total Time	15 Mints
Test Help For	Physics Subject Test Prep. All Admissions Test. All Jobs and recruitment Test prep. Medical and BDS Test prep. Engineering and B Tech Test prep.

Test By Subject	Physics
Test By Topics	Physics Subject

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Physic Oscillations and Waves Test Online MCQs

Physic Oscillations and Waves Test Online MCQs

Physics

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