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

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 ______

Two identical bar magnets each of magnetic moment M, separated by some distance are kept perpendicular to each other. The magnetic induction at a point at the same distance d from the centre of magnets, is (µ₀ = permeability of free space)

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 ____________.

A transverse wave is described by the equation, y = Y₀ sin 2π(ft - `"x"/lambda`). The maximum particle velocity is equal to four times the wave velocity if ______

A thermodynamic system goes from states (i) P, V to 2P, V  (ii) P, V to P, 2V. The work done in the two cases is ______.

A domain in a ferromagnetic substance is in the form of a cube of side 1 µm. If it contains 8 × 10¹⁰ atoms and each atomic dipole has a dipole moment of 9 × 10^-24 Am² then the magnetisation of the domain is ______.

For a paramagnetic substance, the magnetic susceptibility is ______.

Two identical wires of substances 'P' and 'Q ' are subjected to equal stretching force along the length. If the elongation of 'Q' is more than that of 'P', then ______.

The resultant amplitude of two waves y₁ = a sin (ωt + π/6) and y₂ = a cos ωt will be ______

Mechanical force per unit area of a charged conductor is ______