The magnified virtual image is formed by (a) convex mirror (b) convex lens (c) plane mirror (d) concave lens

The equation expressing the correlation between refractive index and wavelength of light is (a) μ = A + B/λ (b) μ = A + Bλ² (c) μ = Aλ + B (d) μ = A + B/λ²

If a reflected ray from a concave mirror makes an angle of 45° with the normal, the angle of incidence will be 90° 22.5° 135° 45°

At what angle must a light ray fall on the surface of an equilateral prism so that its angle of minimum deviation will be 20°? OR Calculate the time required by a ray of light to traverse a glass slab of thickness 2 mm. The refractive index of glass=1.5.

Draw refracted rays for the incident rays which are parallel to the principal axis of a convex lens. Mark focus (F). [3] OR Explain the converging action of a convex lens. [3]

A light is incident from air medium on another medium. If the refractive index of this medium is 1.5 and the wavelength of light in this medium is 4000 Å what is the wavelength of light in the air medium ? What is the velocity of the light in this medium? [3] OR As a result of refraction of light through an equilateral prism the angle of deviation becomes 40°. If the path of the ray through the prism is parallel to the base of the prism, determine the angle of incidence at the first surface of prism. [3]

What type of lens is used as a magnifying glass?

For which value of the angle of incidence in refraction of light is Snell's law not applicable?

Which type of mirror produces a virtual, diminished and erect image? (a) Plane mirror (b) Concave mirror (c) Convex mirror (d) Parabolic mirror

Where is the image formed if the object is placed in between f and 2f of a convex lens ?

State whether the refractive index of a medium would increase or decrease if the angle of incidence is increased.

A ray parallel to the principal axis of a concave mirror follows which path after reflection by the concave mirror?