CUET (UG) entrance exam Question Bank Solutions for Physics

The e.m.f of The battery in a thermocouple is doubled. The rate of heat generated at one of the junction will.

Blue colour of sky is due to the phenomenon of

Which particle is most likely to be captured by a ²³⁵u nucleus and cause it to undergo fission? 

A slab of stone of area 0.36 m² and thickness 0.1 m is exposed on the lower surface to steam at 100°C. A block of ice at 0°C rests on the upper surface of the slab. In one hour 4.8 kg of ice is melted. The thermal conductivity of the slab is:
(Given latent heat of fusion of ice = 3.36 × 10⁵ J kg⁻¹)

A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V. The potential at a distance of 2 cm from the centre of the sphere is ______.

A positive charge q is distributed over a circular ring of radius a. It is placed in a horizontal plane and is rotated about its axis at a uniform angular speed ω. A horizontal magnetic field B exists in the space. The torque acting on the ring due to the magnetic force is ______.

AB is a wire of potentiometer with the increase in value of resistance R, the shift in the balance point J will be:

A proton and an α-particle enter a uniform magnetic field perpendicularly with the same speed. If the proton takes 25 µ seconds to make 5 revolutions, then the time period for the α-particle would be:

Three resistance each of 4Ω are connected to from a triangle. The resistance b / w two terminal is

The conductivity of super - conductor is

The value of current I in the network shown in fig.

A wire of resistance R is cut into two equal part. There parts are then connected in parallel. The equivalent resistance of the combination will be

What is the current I in the circuit as show in fig.

Specific resistance of a conductor increase with.

1°C rise in temperature is observed in a conductor by passing a certain current. If the current is double then the rise in temperature is approximately.

Four point masses, each of value m, are placed at the comers of a square ABCD of side L, the moment of inertia of this system about an axis through A and parallel to BD is ______.

The resistance of ideal voltmeter is

The magnetic moment of atomic neon is equal to

When a current is passed through a tangent galvanometer, it gives a deflection of 30° for 60° correction, the current must be

At a certain 100 p of reduces 0.0/57 m carrier a current of 2 amp. The magnetic field at the centre of the coop is [`mu_0 = 4pi xx 10^-7` wb/amp – m]