Ray Optics Test...

A monochromatic beam of light passes from a denser medium into a rarer medium. As a result

Refractive index for a material for infrared light is

A beam of monochromatic blue light of wavelength 4200 Å in air travels in water of refractive index 4/3. Its wavelength in water will be

A beam of light propagating in medium A with index of refraction n (A) passes across an interface into medium B with index of refraction n(B). The angle of incidence is greater than the angle of refraction; v (A ) and v(B) denote the speed of light in A and B. Then which of the following is true

A rectangular tank of depth 8 meter is full of water (μ = 4/3), the bottom is seen at the depth

A vessel of depth 2d cm is half filled with a liquid of refractive index µ₁ and the upper half with a liquid of refractive index µ₂. The apparent depth of the vessel seen perpendicularly is

A beam of light is converging towards a point I on a screen. A plane glass plate whose thickness in the direction of the beam = t, refractive index = μ, is introduced in the path of the beam. The convergence point is shifted by

Light travels through a glass plate of thickness t and having refractive index n. If c is the velocity of light in vacuum, the time taken by the light to travel this thickness of glass is

Light takes 8 min 20 s to reach from sun on the earth. If the whole atmosphere is filled with water, the light will take the time (_αμ_w = 4/3)