Question

1. Objects which do not allow light to pass through them are called:
(a)transparent (b)translucent (c)opaque
2. Light is a form of
(a)energy (b)electricity (c)shadow
3. Natural sources of light are __________ and ______________.
4. The glowing electric bulb is an example of ____________ source of light.
5. Dark coloured glasses can be used for viewing ___________.

Answer 1

Answer:

1ans-opaque

2ans-energy

3ans-sun and stars

4ans-artificial or electrical

Answer 2

Concept introduction:

Light is the electromagnetic radiation which we can observe by our eyes.

Given:

Here it is given that,

1. Objects which do not allow light to pass through them are called:

(a)transparent (b)translucent (c)opaque

2. Light is a form of

(a)energy (b)electricity (c)shadow

3. Natural sources of light are __________ and ______________.

4. The glowing electric bulb is an example of ____________ source of light.

5. Dark coloured glasses can be used for viewing ___________.

To find:

We have to fill in the blanks.

Solution:

1. Objects which do not allow light to pass through them are called: opaque

2. Light is a form of energy.

3.  Natural sources of light are sun and stars.

4. The glowing electric bulb is an example of elctrical source of light.

5. Dark coloured glasses can be used for viewing  direct sunlight.