JEE Physics - MCQ Practice Questions

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:

A standing wave on a string has nodes at x = 0 and x = 2 m. The wavelength is:

Two sound waves have frequencies 256 Hz and 260 Hz. If they produce 4 beats per second, the beat frequency matches when:

An observer approaches a stationary sound source of frequency 500 Hz with velocity 20 m/s. If the speed of sound is 340 m/s, what is the observed frequency?

Two coherent sources vibrate in phase and produce waves of wavelength 2 cm. If they are separated by 6 cm, what is the phase difference between the waves at a point equidistant from both sources?

A sound source is moving away from a stationary observer with velocity 30 m/s. The source frequency is 600 Hz and speed of sound is 340 m/s. What is the observed frequency?

A stretched string fixed at both ends has length 1 m and mass 0.01 kg. If tension is 40 N, what is the fundamental frequency?

A plane wave is incident on a barrier with a small opening. The wave diffracts through the opening. Which factor most affects the diffraction pattern?