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:

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:

A string of length 1 m is fixed at both ends. The fundamental frequency is 100 Hz. What is the frequency of the third harmonic?

A longitudinal wave has frequency 50 Hz and wavelength 8 m. The wave velocity is:

Standing waves are formed on a string by superposition of two waves traveling in opposite directions with:

A person hears sound from two sources with frequencies 400 Hz and 404 Hz. The beat frequency heard is:

The Doppler effect is observed when:

A wave is traveling through a medium with velocity v = 340 m/s. If the wavelength is 0.85 m, what is the frequency of the wave?

Which of the following correctly represents the relationship between wave velocity, frequency, and wavelength?

A guitar string of length 0.6 m is vibrating in its third harmonic. How many antinodes are present on the string?

The amplitude of a wave is doubled. How does this affect the intensity of the wave?

Two waves of same frequency interfere constructively. If individual amplitudes are 3 cm and 4 cm, what is the resultant amplitude?

A string is vibrating in its second harmonic with frequency 200 Hz. What is the fundamental frequency?

Two sources produce sound waves of frequencies 250 Hz and 254 Hz. What is the beat frequency heard?

A wave traveling in the positive x-direction reflects from a fixed end. What is the phase change upon reflection?