Question

Q-2 Answer the following questions in a word
1) What is the important feature of an object so that it casts a shadow?
2) How many terminals does an electric cell have?
3) Which part of our body is protected by rib cage?​

Answer 1

Answer:-

1.) There are three important sources/objects needed for a shadow to be formed:-

• A source of light
• An opaque object
• A screen or surface behind the object.

2.) An electric cell will have 2 terminals.

3.) Heart and Lungs-:

Rib cage provides protection to heart and lungs. Human beings will have 12 pairs of ribs.

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