JEE Physics - MCQ Practice Questions
Physics is where JEE ranks are usually won or lost, since a single conceptual slip changes the whole answer. Questions here span mechanics, rotational motion, thermodynamics, waves and oscillations, electrostatics, current electricity, magnetism, optics, and modern physics. Numerical problems carry full derivations so you can see which step you skipped, not just which option was right.
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A wave travels with a velocity of 300 m/s and has a frequency of 150 Hz. What is its wavelength?
Which of the following is a characteristic of transverse waves?
Two waves of the same frequency interfere constructively. The resultant amplitude is:
A string of length L is fixed at both ends. The fundamental frequency is f₁. What is the frequency of the second harmonic?
Standing waves are formed when:
The velocity of a transverse wave on a string depends on:
When a longitudinal wave travels through a medium, particles undergo:
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?
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 standing wave is formed on a string. At a node, the particle velocity is always:
Energy of a harmonic wave is proportional to:
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?
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?