Light Reflectio...

During refraction of light, which of the following quantity does not change?

For the same angle of incidence, the angles of refraction in media P, Q, R and S are $$50^o, 40^o, 30^o, 20^o$$, respectively. The speed of light is minimum in medium :

Refraction of light can take place at boundary of

Mirror made by silvering the outer surface of the piece of a hollow sphere:

Mirror made by silvering the inner surface of the piece of a hollow sphere is:

A light is travelling from air into a medium. The velocity of light in a medium is reduced to 0.75 times the velocity in air. Assume that angle of incidence $$i$$ is very small, the deviation of the ray is :

According to laws of refraction(Snell's law) :

Equi convex is a type of ______  lens. Fill in the blank.  

A convex mirror used for rear view on an automobile has a radius of curvature of 3.00m. If a bus is located at 5.00m from this mirror, find magnification?

Which one of the following materials cannot be used to make a lens?