Ray Optics Test...

The refractive index of water, glass and diamond are 1.33, 1.50, 2.40 respectively. The refractive index of diamond relative to water and of glass relative to diamond, respectively are nearly

A ray of light on the surface of a glass plate of thickness t. If the angle of incidence θ is small, the emerging ray would be displaced side ways by an amount
(take, n = refractive index of glass)

A parallel beam of light is incident on a solid transparent sphere of a material of refractive index n. If a point image is produced at the back of the sphere, the refractive index of the material of sphere is

The wavelength of a certain colour in air is 600 nm. What is the wavelength and speed of this colour in glass of refractive index 1.5 ?

A wave has velocity u in medium P and velocity 2u in medium Q. If the wave is incident in medium P at an angle 30°, then the angle of refraction will be

A fish, looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is 4/3 and the fish is 12 cm below the surface of water, the radius of the circle in centimetre is

A thin convex lens made from crown glass (μ = 3/2) has focal length f. When it is measured in two different liquids having refractive indices 4/3 and 5/3. lt has the focal lengths f₁ and f₂ , respectively. The correct relation between the focal length is

A point object is placed at a distance of 20 cm from a thin plano-convex lens of focal length 15 cm, if the plane surface is silvered. The image will form at

A biconvex lens of focal length f forms a circular image of sun of radius r in focal plane. Then,

Graph of position of image versus position of point object from a convex lens is shown. Then, focal length of the lens is