Physic Oscillations and Waves Test Online MCQs

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

2. SONAR emits which of the following waves?

3. A wave is represented by the equation y = a sin (0.01x – 2t) where a and x are t in second. Velocity of propagation of the wave is:

4. If the metal bob of a simple pendulum is replaced by a wodden bob, then its time period will be:

5. The wave equation is y = 0.30 sin (314t – 1.57x) where t, x and y are in second, meter and centimeter respectively. The speed of the wave is

6. The waves in which the particles of the medium vibrate in a direction perpendicular to the direction of wave motion is known as:

7. 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:

8. In arrangement given in figure if the block of mass m is displaced the frequency is given by:

9. A resonance in air column of length 20 cm resonates with a tuning fork of frequency 450 Hz. Ignoring end correction, the velocity of sound in air is:

10. The frequency of oscillator of the springs as shown in figure will be:

11. Energy is not carried by which of the following wave?

12. Two cars A and B approach a stationary observer from opposite sides as shown in fig. Observer hears no beats. If the frequency of the horn of the car B is 504 Hz, the frequency of horn of car A will be:

13. 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:

14. 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:

15. 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: