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Physics Quiz on Optics and Electricity

Authored by yogesh chauhan

Physics

10th Grade

Used 2+ times

Physics Quiz on Optics and Electricity
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40 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Focal length of a concave mirror is 20 cm. Object is placed at 40 cm. The image is formed at:

20 cm

30 cm

40 cm

60 cm

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Power of a convex lens of focal length 0.25 m is:

2 D

3 D

4 D

5 D

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A parallel beam of light after reflection from a concave mirror passes through:

Pole

Focus

Centre of curvature

Principal axis

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Refractive index of water is 4/3. If speed of light in vacuum is 3 × 10⁸ m/s, speed in water is:

2.25 × 10⁸ m/s

2 × 10⁸ m/s

2.5 × 10⁸ m/s

3 × 10⁸ m/s

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A ray passing through the optical centre of a convex lens:

Deviates towards axis

Deviates away

Passes undeviated

Totally reflects

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which lens is used to correct hypermetropia?

Concave

Convex

Cylindrical

Plano-concave

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The mirror used in vehicles as rear-view mirror is:

Concave

Convex

Plane

Cylindrical

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