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Question (1)

QN002431

Which statement correctly expresses the first law of reflection?

(A) Angle of incidence is greater than angle of reflection
(B) Angle of incidence is equal to angle of reflection
(C) Angle of reflection is always 90°
(D) Reflected ray retraces its path always

Correct Answer: B

Explanation:

According to the first law of reflection, angle of incidence equals angle of reflection.

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Question (2)

QN002432

The angle between the incident ray and the normal is called:

(A) Angle of reflection
(B) Angle of deviation
(C) Angle of incidence
(D) Angle of scattering

Correct Answer: C

Explanation:

The angle between the incident ray and the normal is called the angle of incidence.

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Question (3)

QN002433

The angle between the reflected ray and the normal is called:

(A) Angle of incidence
(B) Angle of reflection
(C) Angle of deviation
(D) Right angle

Correct Answer: B

Explanation:

The angle between the reflected ray and the normal is called the angle of reflection.

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Question (4)

QN002434

The normal to a mirror is drawn at an angle of:

(A) 45° to the mirror
(B) 180° to the mirror
(C) 90° to the mirror
(D) 0° to the mirror

Correct Answer: C

Explanation:

The normal is always perpendicular to the mirror surface.

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Question (5)

QN002435

A ray strikes a plane mirror with an angle of incidence of 25°. The angle of reflection is:

(A) 15°
(B) 25°
(C) 50°
(D) 65°

Correct Answer: B

Explanation:

Angle of reflection equals angle of incidence.

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Question (6)

QN002436

A light ray falls on a mirror with an angle of incidence of 38°. The angle between the incident ray and reflected ray is:

(A) 38°
(B) 76°
(C) 52°
(D) 142°

Correct Answer: B

Explanation:

Angle between incident and reflected rays = 2 × 38° = 76°.

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Question (7)

QN002437

If the angle of reflection is 42°, the angle of incidence is:

(A) 21°
(B) 42°
(C) 48°
(D) 84°

Correct Answer: B

Explanation:

Angle of incidence equals angle of reflection.

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Question (8)

QN002438

A ray falls normally on a mirror. The angle of incidence is:

(A) 90°
(B) 180°
(C) 45°
(D) 0°

Correct Answer: D

Explanation:

A ray along the normal has an angle of incidence of 0°.

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Question (9)

QN002439

When a ray falls normally on a mirror, the angle of reflection is:

(A) 0°
(B) 45°
(C) 90°
(D) 180°

Correct Answer: A

Explanation:

Angle of reflection equals angle of incidence.

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Question (10)

QN002440

Which set of lines always lies in the same plane according to the second law of reflection?

(A) Incident ray, mirror and object
(B) Incident ray, normal and reflected ray
(C) Mirror, object and image
(D) Incident ray, image and object

Correct Answer: B

Explanation:

The incident ray, reflected ray and normal lie in the same plane.

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Question (1)

Which statement correctly expresses the first law of reflection?

Explanation:

Link:

Question (2)

The angle between the incident ray and the normal is called:

Explanation:

Link:

Question (3)

The angle between the reflected ray and the normal is called:

Explanation:

Link:

Question (4)

The normal to a mirror is drawn at an angle of:

Explanation:

Link:

Question (5)

A ray strikes a plane mirror with an angle of incidence of 25°. The angle of reflection is:

Explanation:

Link:

Question (6)

A light ray falls on a mirror with an angle of incidence of 38°. The angle between the incident ray and reflected ray is:

Explanation:

Link:

Question (7)

If the angle of reflection is 42°, the angle of incidence is:

Explanation:

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Question (8)

A ray falls normally on a mirror. The angle of incidence is:

Explanation:

Link:

Question (9)

When a ray falls normally on a mirror, the angle of reflection is:

Explanation:

Link:

Question (10)

Which set of lines always lies in the same plane according to the second law of reflection?

Explanation:

Link:

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