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

A bar magnet has length 3 cm, cross-sectional area 2 cm³ and magnetic moment 3 Am². The intensity of magnetisation of bar magnet is ______.

A resistance of 20 Ω is connected in the left gap of a meter bridge and an unknown resistance greater than 20 Ω is connected in the right gap. When these resistances are interchanged, the balance point shifts by 20 cm. The unknown resistance is ______.

For an insulator, the forbidden energy gap is ______.

A source of 300 Hz frequency, an observer and a wind are moving as shown in the figure with respect to the ground. The frequency heard by observation is ______.

(Take, the speed of sound in air = 340 m/s)

Two instruments having stretched strings are being played in unison. When the tension of one of the instruments is increased by 1%, 3 beats are produced in 2 s. The initial frequency of vibration of each wire is ______.

An astronaut is approaching the moon. He sends out a radio signal of frequency 5000 MHz and the frequency of echo is different from that of the original frequency by 100 kHz. His velocity of approach wrt, to the moon, is ______.

Transverse waves are generated in two steel wires A and B with a source of 512 Hz. If their diameters are in the ratio 2 : 1 and tensions are in the ratio 2 : 1, the velocities of the waves are in the ratio (wires A and B) ______.

A progressive wave of frequency 500 Hz is travelling with a velocity of 360 m/s. How far apart are two points 60° out of phase?

The figure below shows a balanced Wheatstone network. If it is disturbed by changing P to 22Ω, then which of the following steps will bring the bridge again to a balanced state?

Wave of frequency 500 Hz has a phase velocity 360 ms^-1. The phase difference between two displacement at a certain point at time 10^-3 s apart will be ______.

A nucleus of rest splits into two nuclear parts having radii in the ratio 1 : 2. Their velocities are in the ratio.

If a string fixed at both ends vibrates in four loops. The wavelength is 10 cm. The length of string is ______.

The energy of photon corresponding to a radiation of wavelength 600 nm is 3.32 × 10⁻¹⁹ J. The energy of a photon corresponding to a wavelength of 400 nm is ______. 

In Huygens' wave theory, the locus of all points in the same state of vibration is called ______.

The direction of wavefront of a wave with the wave motion is ______.

Two waves Y₁ = 0.25 sin 316 t and Y₂ = 0.25 sin 310 t are propagating along the same direction. The number of beats produced per second are ______.

The light of wavelength '`lambda`'. incident on the surface of metal having work function `phi` emits the electrons. The maximum velocity of electrons emitted is ______.
[c = velocity of light, h = Planck's constant, m = mass of electron]

As we go from the equator of the earth to pole of the earth, the value of acceleration due to gravity ______.

The internal energy of a system is ______

For a particle performing SHM when displacement is x, the potential energy and restoring force acting on it is denoted by E and F, respectively. The relation between x, E and F is ____________.