Chapter 16 – Light

The impression or sensation remains on the retina for about how may seconds even after removal of the object ?

The cells present in the retina of eye and responding to intensity of light are:

The cells present in the retina of eye and responding to colour are:

The disease of eye in which crystalline lens becomes hazy or even opaque due to development of membrane over it is :

Angle of incidence is equal to the angle of reflection:

Image formed by a plane mirror is:

Reflection is:

Splitting of light into its colours is known as:

Which of the following is not a source of light:

Which type of mirror is used to obtain a virtual, laterally inverted image and equal in size of an object ?

The angle between incident ray and normal is called the angle of:

The lens present in eye is:

Kaleidoscope is based on the pattern of:

When two mirrors are placed parallel to each other, and a candle is placed in the centre of the mirrors no. of images will be formed.

The difference in the colour of the eye is due to difference in:

Beam of light striking the reflecting surface is called:

Beam of light, bounced back by the surface after falling on it is called

Band of seven colours is called:

Rainbow is formed after rain due to

Front bulged part of the eyeball is called:

Visually impaired people can read and write using:

The amount of light entering the eye is regulated by:

The focal length of the eye-lens is changed by:

The human eye forms the image of an object at its:

Far point of a normal human eye is situated at:

The least distance of distinct vision for a young adult with normal vision is:

The near point at the age of 60 years is:

The massage of image formation is convfeyed to the brain by:

A person who cannot see the distant objects is said to be suffering from:

A person who cannot see the near by objects is said to be suffering from: