Home
Class 12
PHYSICS
A beam of width t incident at 45^@ on an...

A beam of width t incident at `45^@` on an air-water boundary. The width of the beam in water is ________

A

`(mu-1)t`

B

`mut`

C

`(sqrt(mu^2-1))/mu`

D

`((sqrt(2mu^2-1)))/mut`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

A beam of white light is incident on a hollow prism of glass. Then

A coverging beam of light is incident on the concave mirror. Then the reflected light :

A ray of light is incident upon an air/water interface ( it passes from air into water) at an angle of 45^(@) . Which of the following quantities change as the light enters the water? (I) wavelength " " (II) frequency " " (III) speed of propagation (IV) direction of propagation

A narrow parallel beam of light is incident on a transparent sphere of refractive index n if the beam finally gets focused at a point situated at a distance= 2xx("radius of sphere") form the center of the sphere then find n ?

There is layer of medium of variable refractive index mu = sqrt(2) - (1)/(sqrt(2)) y (where 0 le t lt 1//2 ) sandwitched between the layer of glass and air A beam of light travelling in air at an angle 45^(@) has a width Delta omega . When the beam enters the layer of glass its width becomes : (mu_("glass") = sqrt(2))

Two beams of light are incident normally on water (R.l. = 4/3 ). If the beam 1 passes through a glass (R.l. = 3/2 ) slab of height h as shown in the figure, the time difference for both beams for reaching the bottom is

A beam of white light is incident normaly on a plane surface absorbing 70% of the light and reflecting the rest. If the incident beam carries 10 w of power, find the force exerated by it on the surface.

A parallel beam of monochromatic light of wavelength 500 nm is incident normally on a rectangular slit. The angular width of the central fringe of Fraunhofer diffraction is found to be 60^(@) . Find the width of the slit in metre.

A parallel beam of light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest. If the incident beam carries 60 W of power, the force exerted by it on the surface is

STATEMENT -1: A white parallel beam of light is incident on a plane glass-vacuum interface as shown. The beam may not undergo dispesion after suffering deviation at the interface (The beam is not incident normally on the interface.) STATEMENT -2: Vacuum has same refractive index for all colours of white light.