CUET (UG) entrance exam Question Bank Solutions for Physics

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

The electric field intensity produced by the radiations coming from 100 W bulb at 3 m distance is E. The electric field intensity produced by the radiations coming from 50 W bulb at the same distance is:

The optical length of an astronomical telescope with magnifying power of ten for normal vision is 44 cm. what is the focal length of the object

The resolving power of a telescope whose lens has a diameter of 1.22 m for a wavelength of 5000° is

A doctor advise a patient to are spectating with a convex len of focal length 40 cm in constant with ·a concave lens of focal length 25 cm. What is the power of the combination?

Refractive index of material of a prism is `sqrt(2)`. The angle of prism is 60°, What is the angle of minimum deviations?

If the refractive index of a material of equilateral prism is `sqrt(3)` then angle of minimum deviation of prism

The focal length of a this lens in vacuum is f. If the material of the lens has µ = 3/2, its focal length when immersed in water refractive index 4/3 will

A slit width a is illuminate by white light. The first minimum for red light (λ = 6500 A°) will fall at O = 30 when a will be