Physics

A ray of light falls on a glass surface at an angle of 30 degrees with the surface. If it is reflected, what is the angle between incident and reflected ray?

Yellow light is used in sodium lamps for street lighting because:

How many refractions does a ray of light undergo in a glass slab?

The image formed by a concave lens is always:

If the distance of an object from a convex lens is increased, what happens to the size of the real image?

A person with Hypermetropia uses a lens of +2.0 D. Where is his near point?

Which of the following is used to see objects hidden around corners?

What is the relation between the speed of light in vacuum (c), speed in medium (v) and refractive index (n)?

If the angle of incidence is 0 degrees, the angle of refraction is:

The focal length of a lens depends on:

A ray of light is incident on a plane mirror. If the mirror is rotated by 10 degrees, the reflected ray rotates by:

What is the focal length of a magnifying glass of power 20 D?

The rainbow is formed due to a combination of:

An object is placed between F and 2F of a convex lens. The image is:

Which phenomenon is responsible for the blue color of the deep sea?

A virtual image larger than the object can be produced by:

If a ray of light goes from water to air, its speed:

The power of a lens is -2.0 D. What is its focal length?

What is the speed of light in vacuum?

Which of the following materials is transparent?