JEE Physics - MCQ Practice Questions

A wave travels on a string with velocity v = 20 m/s. If the frequency is 50 Hz, what is the wavelength?

Two waves of frequencies 256 Hz and 260 Hz are produced simultaneously. What is the beat frequency?

The equation of a wave is y = 5sin(2πt/0.04 - 2πx/0.8) m. What is the wave velocity?

For a stationary wave on a string fixed at both ends of length L = 1 m, the fundamental frequency is 100 Hz. What is the velocity of the transverse wave on the string?

A tuning fork vibrates at 440 Hz. If the speed of sound is 330 m/s, what is the wavelength of sound produced?

The intensity of a sound wave at distance r from a point source varies as:

A source of frequency 500 Hz moves towards a stationary observer at 10 m/s. The speed of sound is 330 m/s. What is the apparent frequency heard by the observer?

A string of length 2 m vibrates in its third harmonic. The number of nodes (excluding ends) is:

A pipe open at both ends resonates at a frequency of 500 Hz for the fundamental mode. If it is closed at one end, the fundamental frequency becomes:

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 standing wave is formed on a string. At a node, the particle velocity is always:

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?

Energy of a harmonic wave is proportional to:

A string of mass 100 g and length 2 m is fixed at both ends. If tension is 200 N, what is the frequency of the fundamental mode?

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:

Two coherent sources with intensity ratio 4:1 interfere. The maximum intensity in the interference pattern is:

A sound wave traveling in air at 340 m/s encounters a wall. The reflected wave interferes with the incident wave. At what distance from the wall is the first antinode?

A wave travels along a string with velocity v = 20 m/s. If the frequency is 50 Hz, what is the wavelength?

The speed of light in a medium is 2×10⁸ m/s. What is the refractive index of the medium?