Physics Quiz- 3

1. The position, relative size and nature of the image formed by a concave lens for an object placed at infinity are respectively -

Correct! Wrong!

Ans.:- (a)

2. Clearly, image will be virtual. No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be -

Correct! Wrong!

Ans.:- (a)

3. A mobile phone charger is -

Correct! Wrong!

Ans.:-(c)

4. Which one of the following statements is correct ?

Correct! Wrong!

Ans.:- (a)

5. The force acting on a particle executing simple harmonic motion is -

Correct! Wrong!

Ans.:- (c)

6. Statement I: - Pulling a lawn roller is easier than pushing it. Statement II: - Pushing increases the apparent weight and hence the force of friction.

Correct! Wrong!

Ans.:- (a)

7. A rectifier is an electronic device used to convert -

Correct! Wrong!

Ans.:- (a)

8. In step-down transformer, the AC output gives the -

Correct! Wrong!

Ans.:- (a)

9. Two layers of a cloth of equal thickness provide warmer covering than a single layer of cloth with double the thickness. Why ?

Correct! Wrong!

Ans.:- (a)

10. Which one of the following common devices works on the basis of the principle of mutual induction ?

Correct! Wrong!

Ans.:- (b)

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