JEE Physics - MCQ Practice Questions

Two identical sound sources emit waves in phase. An observer is at a point where the path difference is 1.5λ. What is the phase difference?

A stationary observer hears a frequency of 1100 Hz from a moving source. If the source is moving towards the observer with speed 10 m/s, and the actual frequency is 1000 Hz, what is the speed of sound?

When a wave passes from a less dense to a more dense medium, the phenomenon that does NOT occur is:

A transverse wave on a string has amplitude A = 0.1 m and frequency f = 50 Hz. Maximum particle velocity is:

A sound source moves towards a stationary observer with velocity 30 m/s. The actual frequency of the source is 500 Hz and speed of sound is 330 m/s. The apparent frequency observed is:

A pipe closed at one end has a length of 50 cm. The fundamental frequency of the pipe is 170 Hz. What is the speed of sound in the pipe?

A wire of length 1 m and mass 10 g is fixed at both ends and has a tension of 90 N. What is the fundamental frequency of the wire?

A plane wave is incident on a boundary between two media. The angle of incidence is 30°. If the refractive index of the first medium is 1.5 and second is 1, what is the angle of refraction?

A tuning fork vibrates at 256 Hz. If the speed of sound is 340 m/s, the distance between consecutive compressions in the sound wave is:

A mechanical wave has the equation y = 5sin(2πx - 10πt), where x and y are in cm and t is in seconds. The wave velocity is:

A sound wave undergoes total internal reflection at an interface. This indicates:

A sound source moves towards a stationary observer with velocity v_s. The observer hears frequency f'. The actual frequency of the source is f. The relationship is:

A wave on a string has amplitude A = 5 cm and period T = 0.2 s. The maximum velocity of a particle on the string is:

Two identical loudspeakers separated by 2 m emit sound of frequency 340 Hz in phase. If the speed of sound is 340 m/s, constructive interference occurs at:

A pipe closed at one end has its fundamental frequency at 200 Hz. The next higher harmonic that can be produced is:

A wave pulse travels along a rope. When it reaches a fixed end, the reflected pulse is:

A progressive wave is represented as y = 2sin(100πt - πx/2). The phase difference between particles at x = 1 m and x = 3 m is:

The intensity of a wave is proportional to:

A wave undergoes refraction when passing from one medium to another. Which quantity remains constant?

A string vibrates with 4 antinodes forming a standing wave pattern. The number of nodes (excluding ends) is: