MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions for Physics

An open organ pipe and a closed organ pipe have the frequency of their first overtone identical. The ratio of length of open pipe to that of closed pipe is ______.

A block of mass m is moving on rough horizontal surface with momentum p. The coefficient of friction between the block and surface is µ. The distance covered by the block before it stops is [g =acceleration due to gravity)

The mass of the moon is `1/81` of the mass of the earth. Its diameter is `1/3.7` of that of the earth. If acceleration due to gravity on the surface of the earth is 9.8 m/s², then the acceleration due to gravity on the surface of the moon.

Two waves having the same amplitude and frequency overlap near a point. The ratio of the intensities when the two waves arrive in phase to that when they arrive 90° out of phase is ______ 

In Young's double-slit experiment, if the width of the 2^nd bright fringe is 4 x 10^-2 cm, then the width of the 4^th bright fringe will be ______ cm.

A wave is represented by the equation, y = A sin (10 πx + 15 πt + π/3) where x is in metre and t are in second. Which of the following statements is correct?

A vehicle of mass m is moving with momentum p on a rough horizontal road. The coefficient of friction between the tyres and the horizontal road is µ. The stopping distance is ____________.

(g = acceleration due to gravity)

In Young's double slit experiment green light is incident on the two slits. The interference pattern is observed on a screen. Which one of the following changes would cause the observed fringes to be more closely spaced?

Two identical strings of length I and 2I vibrate with fundamental frequencies N Hz and 1.5 N Hz, respectively. The ratio of tensions for smaller length to large length is ____________.

When open pipe is closed from one end third overtone of closed pipe is higher in frequency by 150 Hz, then second overtone of open pipe. The fundamental frequency of open end pipe will be ____________.

In Young's double-slit experiment, in an interference pattern, a second minimum is observed exactly in front of one slit. The distance between the two coherent sources is 'd' and the distance between source and screen is 'D'. The wavelength of the light source used is ______

A graph is plotted between the fringe-width Z and the distance D between the slit and eye-piece, keeping other adjustment same. The correct graph is

A.	B.
C.	D.

At a certain instant, a stationary transverse wave is found to have maximum kinetic energy. The appearance of string at that instant is ____________.

For a body moving with constant speed in a horizontal circle, which of the following remains constant?

A metal rod has length, cross-sectional area and Young's modulus as L, A and Y, respectively. If the elongation in the rod produced is l, then work done is proportional to ______.

At the poles, a stretched wire of a given length vibrates in unison with a tuning fork. At the equator, for same setting to produce resonance with same fork. the vibrating length of wire ______.

The fundamental frequency of a closed pipe is 400 Hz. If `1/3`rd pipe !s tilled with water, then the 3 frequency of 2nd harmonic of the pipe will be (neglect and correction).

Two open pipes of different lengths and same diameter in which the air column vibrates with fundamental frequencies 'n₁', and 'n₂' respectively. When both pipes are joined to form a single pipe, its fundamental frequency will be ______.

In a fundamental mode the time required for the sound wave to reach upto the closed end of a pipe filled with air is 't' second. The frequency of vibration of air column is ________.

The momentum of a photon of energy 1 MeV in kg m/s will be ______