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

A light beam is incident at an angle twice the angle of refraction. The angle of refraction is ______. 

The magnetic susceptibility is given by ______

Monochromatic light of wavelength λ is incident on the plane reflecting surface. After reflection, its wavelength will be ______

A steel wire of length I has a magnetic moment M. It is then bent into a semicircular arc. The new magnetic moment is ______.

N number of balls of mass m kg moving along positive direction of X-axis, strike a wall per second and return elastically. The velocity of each ball is u m/s. The force exerted on the wall by the balls in newton, is ______.

A uniform metal wire has length L, mass M and density p. It is under tension T and v is the speed of transverse wave along the wire. The area of cross-section of the wire is ______.

In a metre bridge, the gaps are closed by two resistances P and Q and the balance point is obtained at 40 cm. When Q is shunted by a resistance of 10 Ω, the balance point shifts to 50 cm. The values of P and Q are ______

A transverse wave is propagating on the string. The linear density of a vibrating string is 10^-3 kg/m. The equation of the wave is Y = 0.05 sin (x + 15 t) where x and Y are measured in metre and time in second. The tension force in the string is ______,

Relative permeability of nickel is 550, then its magnetic susceptibility will be ____________.

The ratio of minimum to maximum wavelength in Balmer series is ____________.

Three blocks with masses m, 3m and 6m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 3 m? (g is the acceleration due to gravity)

An energy band is, ____________.

For an isotropic medium B, µ, H and M, are related as (where B, µ₀, H and M_z have their usual meaning in the context of magnetic material) ____________.

A particle moves in the x-y plane under the action of a force `vec"F"` such that the value of its linear momentum `(vec"p")` at any time t is P_x = 2 cos t, p_y = 2 sin t. The angle `theta`  between `vec"F"` and `vec"P"` at a given time twill be ____________.

A coil of area A = 0.8 m² is situated in a uniform magnetic field B = 6.0 Wb/m2 and makes an angle of 60° with respect to the magnetic field as shown in figure. The value of the magnetic flux through the area A would be equal to ______. 

Sound waves are passing through two routes one in straight path and the other along a semicircular path of radius r and are again combined into one pipe and superposed as shown in the figure. If the velocity of sound waves in the pipe is v, then frequencies of resultant waves of maximum amplitude will be integral multiples of ______.

The magnetization of bar magnet of length 5 cm, cross-sectional area 2 cm² and net magnetic moment 1 Am² is ______.

A solenoid has core of a material with relative permeability 500 and its windings carry a current of 2 A. The number of turns of the solenoid is 500 per metre. The magnetization of the material is ______.

In the circuit shown, a metre bridge is in its balanced state. The metre bridge wire has a resistance 0.1 ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance are ____________.

After reflection from the open end, a transverse progressive wave y_I = a sin `2pi("t"/"T" - "x"/lambda)` travels along the direction of negative X-axis. The equation of the reflected wave will be ______.