Question Bank

The maximum hearing frequency for a dog is approximately:

Sound intensity ________ with distance from the source.

The refractive index of a material depends on:

When a ray of light enters a glass prism, it undergoes:

The magnifying power of a telescope can be increased by:

If a real object is placed in front of a convex mirror, the image is:

A lens has a focal length of +10 cm. If an object is placed at 20 cm, the magnification is:

Chromatic aberration in a lens is caused by:

The speed of light in a vacuum is c. If it enters a medium of RI 'n', its wavelength changes to:

What is the power of a plane glass plate?

An object is placed at a distance 'u' from a convex lens and its real image is formed at 'v'. The graph of 1/v versus 1/u is a:

Scattering of light by colloidal particles is known as:

The unit of luminous intensity is:

If the objective and eyepiece of a microscope are interchanged, it will act as:

In a ray diagram for a concave mirror, a ray passing through the center of curvature:

The primary cause of refraction is:

Which of the following describes the 'f-number' of a camera?

What type of lens is formed by an air bubble inside water?

What is the speed of light in a vacuum?

Which mirror is used as a rear-view mirror in vehicles?