CUET (UG) entrance exam Question Bank Solutions for Physics

A wavefront AB passing through a system C emerges as DE. The system C could be:

Three different capacitors are·connected in series. Then:-

Which of the following is conserved when light wave interfere?

Light travel faster in air than in glass according to

A Prism has reflecting angle of 60° when a ray is incident at 50° it suffer minimum deviation (Sm). The value of Sm is

If the critical angle for total internal reflecting from medium to vacuum is 30, the velocity of light n the medium is

A piano convex lens is made of refractive index 1.6. The radius of curvature of the curved surface is 60 cm. The focal length of the lens is

A parallel plate capacitor with air between the plates has a capacitance of 8 pF. Calculate the capacitance if the distance between the plates is reduced by half and the space between them is filled with a substance of dielectric constant. (ε_r = 6)

A parallel plate air capacitor of capacitance C is connected to a cell of emf V and then disconnected from it. A dielectric slab of dielectric constant K, which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?

The energy required to charge a parallel plate condenser of plate separation d and plate area of cross-section A such that the uniform electric field between the plates is E is:

When air replace by dielectric medium of constant K, the maximum force of attraction between two charges separate by a distance.

A parallel plate capacitor is made by stocking n equally spaced plates connected alternately. If the capacitance b/w any two plate is x, then the total capacitance is

A 2µF capacitor is charge to 100 volt and then its plate are connected by a conducting wire. The heat produced is:-

Two slits in Young's interference experiment have width in the ratio 1 : 2. The ratio of intensity at the maxima and minima in their interference is ______.

A thin circular ring of mass M and radius R is rotating about its axis with a constant angular velocity ω. Two objects each of mass m are attached gently to the opposite ends of diameter of the ring. The ring will now rotate with an angular velocity:

The force required to double the length of a steel wire of area 1 cm², if its Young's modulus Y= 2 × 10¹¹/m² is: 

An unpolarised beam of intensity 2a² passes through a thin polaroid. Assuming zero absorption in the polaroid, the intensity of emergent plane polarised light will be

Two balls are projected at an angle θ and (90° − θ) to the horizontal with the same speed. The ratio of their maximum vertical heights is:

A projectile can have the same range R for two angles of projection. If t₁ and t₂ be the times of flight in two cases, then what is the product of two times of flight?

Young's double slit experiment is made in a liquid. The 10^th bright fringe lies in liquid where 6^th dark fringe lies in vacuum. The refractive index of the liquid is approximately