Refraction through prism + Refraction through lens

A beam of light consisting of red, green and blue colors incident on a right angled prism. The refractive index of the material of the prism for above red ,green and blue are 1.39 ,1.44 and 1.47 respectively . Then the prism will

There is a prism with refractive index equal to √2 and the refractive angle equal to 30°. One of the refractive surface of the prism is polished.A beam of monochromatic light will be retrace its path if it’s an angle of incidence over the refracting surface of the prism is

Rainbow is formed due to

If the refractive index of a material of equilateral prism is √3, then angle of minimum deviation of the prism is

A ray of light is incident on a 60° prism at the minimum deviation position. The angle of refraction at the first face( i.e. Incident face.) of the prism is.

The angle of prism is ‘A’ . One of its refracting surface is silver. Light rays falling at an angle of incidence 2A on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index μ , of the prism is

The refracting angle of a prism is A , and refractive index of the material of the prism is cot(A/2) . The angle of minimum deviation is.

The reflecting angle of a prism is A , and reflective index of a material of the prism is cot(A/2) . The angle of minimum deviation is.

The angle of incidence for a ray of light at a refracting surface of a prism is 45°. The angle of prism is 60°. If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively are

You are given a prism ,a lens and a slab ; all made of same material. Which have maximum dispersive power?

When a prism is placed in water then the dispersive power of prism

A light ray enters through a right angled prism at point p with the angle of incidence 30° as shown in figure . It travels through the prism parallel to its base BC and emerges along face AC. The refractive index of the prism is

What should be the Refractive index of prism for no emergence?

A prism having angle 10° and refractive index 1.52 find deviation produced by it

A hollow prism produces

A diver inside a water/ pond sees a green color of object on river bank as

White light passing through the prism of an angle 5° . The refractive index of red and violet rays are 1.64 and 1.66 respectively, then find angular dispersion

The difference in deviation produced by violet and red rays is 2° . The deviation produced by mean ray is 48° then find dispersive power(ω) , deviation of violet (δv) and deviation of red(δr)

Angular dispersion depends on

A ray is incident at an angle of incidence i on one surface of a small angle prism(with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is μ ,then the angle of incidence is nearly equal to

A person can see clearly object only when they lie between 50 cm and 400cm from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the corresponding lens, the person has to use will be:

If the focal length of objective lens is increased, then magnifying power of

The power of convex lens is P1=+3D and power of concave lens is P2=-7D The focal length of combination is.

Minimum distance between object, and it’s real image in case of convex lens of focal length ‘f’ is

An object is placed 10cm infront of diverging lens of focal length 20cm then image will be

A concave lens of focal length ‘f’ produces an image 1/n of size of object then the distance of the object from lens is

An object is placed 1cm from convex lens having magnification 5, then it’s focal length will be

If focal length of lens in air is 30cm then find focal length of lens in water

If lens behaves as converging in air and diverging in water, then refractive index is

When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index

Two thin lenses of focal length f1 and f2 are in contact and coaxial. The power of combination is.

A luminous object is placed at a distance of 30cm from the convex lens of focal length 20cm. On the other side lens at what distance from the lens a convex mirror of radius of curvature 10cm be placed in order to have an upright image of the object coincident with it?

Two thin lenses of focal length F1 and F2 are placed at distance ‘d’ between them. For the power of the combination to be zero the separation d is

The focal length of lens is f and diameter of aperture is d when d/4 of diameter is blacked then intensity of image will be

If distance between two identical, thin convex lens is increases then the combined focal length

A convex lens is inserted between screen and object. The size of image obtained at the screen is either 6 or 2/3cm . Then the size of the object is.

When the convex lens of refractive index μ immersed in water of same refractive index μ then it’s focal length is

if in a Plano-convex lens radius of curvature of convex surface is 10cm and the focal length of the lens is 30cm , the refractive index of the material of lens will be

If R1 and R2 are radius of curvature of a convex lens. Then maximum power will be when.

Image from a convex lens is formed beyond 1.5f , the object must be placed at