What do we call a substance through which we cannot see light? Give an example of such a substance.

One Line Answer

A substance through which we cannot see light is called an opaque medium.
Examples: Wood, metals, and black paper, etc.

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Chapter 5: Light - Short/Long answer questions

Chapter 5 Light
Short/Long answer questions | Q 11

Match the following

(a). A light ray passes from air to glass	(1) . speeds up
(b). A light ray passes from glass to water	(2). reflects red light
(c). Virtual image	(3). primary colours
(d). Red rose	(4). plane mirror
(e). Red, green, and blue	(5). slows down

Can light travel in vacuum?

Fill in the blank.

A medium which allows light to pass through it easily is called the ...................

Match the following columns

Column A	Column B
a. Wooden block	i. new moon's day
b. Sun	ii. rectilinear propagation of light
c. Umbra	iii. opaque body
d. Eclipse	iv. luminous body
e. Solar eclipse	v. complete dark park

What do we call an electric bulb producing light?

Fill in the blank

Light consists of .............. colours.

Answer the following.

What is light?

A ______ is an artificial source of light.

Light travels only in a______ It is because of this property that______ are formed.

Sunlight is a blend of______ colors