JEE Physics - MCQ Practice Questions

Two waves of the same frequency interfere constructively. The amplitude of the first wave is 3 units and the second is 4 units. What is the maximum resultant amplitude?

The period of a wave is 0.02 seconds. What is its frequency?

A longitudinal wave has a wavelength of 4 m and speed 400 m/s. The frequency of the wave 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:

Two speakers emit sound of wavelength 1 m with a phase difference of π radians. An observer is located 2 m from both speakers. The path difference at the observer's location is 0.5 m. The intensity at the observer's location will be:

A standing wave is formed on a string with 4 antinodes. The length of the string is 2 m. What is the wavelength?

A resonance tube experiment shows that the first resonance occurs at a length of 9 cm. The next resonance occurs at 27 cm. The end correction of the tube is approximately:

An observer moving at velocity v_o towards a stationary sound source of frequency f hears a frequency f'. The relationship is best represented by:

A wave travels through two media. In medium 1, its speed is 400 m/s and wavelength is 2 m. In medium 2, the speed is 600 m/s. The wavelength in medium 2 is:

A transverse wave on a string is represented as y = 10sin(πx/2 - 4πt), where x and y are in cm and t is in seconds. The particle velocity at x = 1 cm and t = 0 is:

The intensity of a sound wave is inversely proportional to which of the following?

A harmonic wave travels along a string with amplitude 2 cm and wavelength 40 cm. If the wave completes 10 oscillations in 5 seconds, what is the wave velocity?

The equation of a wave is y = 0.06 sin(100t - 8x), where x and y are in meters and t is in seconds. The wavelength is:

Two waves of equal amplitude and slightly different frequencies are superposed. The resulting pattern is called: