CUET (UG) entrance exam Question Bank Solutions for Physics

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

The Young's double slit experiment is performed with blue and with green light of wavelengths 4360Å and 5460Å respectively. If x is the distance of 4th maxima from the central one, then:

In Young's double slit experiment, the minimum amplitude is obtained when the phase difference of super-imposing waves is: (where n = 1, 2, 3, ...)

In Young's double slit experiment shown in figure S₁ and S₂ are coherent sources and S is the screen having a hole at a point 1.0 mm away from the central line. White light (400 to 700 nm) is sent through the slits. Which wavelength passing through the hole has strong intensity?

Two slits, 4mm apart, are illuminated by light of wavelength 6000 A° what will be the fringe width on a screen placed 2 m from the slits?

Two coherent source have wavelength λA and λB Then.

Two wave have intensity ratio 25:4 What is the ratio of maximum to minimum intensity?

In a wave, the path difference corresponding to a phase difference of p is:-

Two coherent monochromatic light beam of intensities I and 4I are super imposed. The max .and min. possible intensities in the resulting beam are

Assuming the earth to be a sphere of a uniform mass density, how much would a body weigh halfway down to the centre of the earth if it weighed 250 Non the surface?

Wavelength of light of frequency 100 Hz is

The penetration of light into the region of geomaterial shadow is called.

The magnifying power of a telescope in normal adjustment is 24, when the length of the telescope tube 1 meter. The focal length of the eye lens is