Reflection & Spherical Mirrors — NEET Physics practice

Question 1

A plane mirror lies in the y–z plane facing the −x direction and moves parallel to the y-axis at 2 cm/s (along +y). A point object in front of it moves with velocity (1 cm/s) î + (1 cm/s) ĵ. Which statement is INCORRECT?

Accepted Answer

Velocity of the image is (î − ĵ) cm/s

Answer

Velocity of the image with respect to the mirror is −(î + ĵ) cm/s

Answer

Velocity of the image is (−î + ĵ) cm/s

Answer

Velocity of the image with respect to the object is (−2î) cm/s

Question 2

A ray strikes a plane mirror making angle α with the normal. The reflected ray makes angle β with the mirror surface. Match Column I with Column II. Column I: Angle of reflection; Value of angle β; Angle of deviation of the incident ray Column II: π − 2α; α; π/2 − α

Accepted Answer

A→Q, B→R, C→P

Answer

A→R, B→P, C→Q

Answer

A→R, B→Q, C→P

Answer

A→P, B→Q, C→R

Question 3

A person wants a real image of himself, 3 times enlarged, using a concave mirror of radius of curvature 30 cm. Where should he stand in front of the mirror?

Accepted Answer

20 cm

Answer

30 cm

Answer

10 cm

Answer

90 cm

Question 4

An object is placed 40 cm from a concave mirror of focal length 15 cm. If the object is moved 20 cm towards the mirror, the displacement of the image is:

Accepted Answer

36 cm away from the mirror

Answer

30 cm towards the mirror

Answer

36 cm towards the mirror

Answer

30 cm away from the mirror

Question 5

Match the magnification m produced by a mirror (Column I) with the mirror and image type (Column II). Column I: m = −2; m = −½; m = +2; m = +½ Column II: Convex mirror; Concave mirror; Real image; Virtual image

Accepted Answer

A→Q & R, B→Q & R, C→Q & S, D→P & S

Answer

A→P & R, B→P & S, C→P & Q, D→R & S

Answer

A→P & S, B→Q & R, C→Q & S, D→Q & R

Answer

A→R & S, B→Q & S, C→Q & R, D→P & S

Question 6

Read the Assertion and Reason carefully and choose the correct option. Assertion: The mirror formula 1/f = 1/v + 1/u applies to both concave and convex mirrors. Reason: In the mirror formula, the focal length of a concave mirror is taken as negative.

Accepted Answer

Both Assertion and Reason are true, but Reason is NOT the correct explanation of Assertion.

Answer

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.

Answer

Assertion is true, but Reason is false.

Answer

Assertion is false, but Reason is true.

Question 7

Match the terms related to spherical mirrors (Column I) with their descriptions (Column II). Column I: Principal axis; Pole; Focal length (f); Principal focus (F) Column II: Line joining the pole and the centre of curvature; Point on the principal axis where incident parallel rays converge or appear to diverge from; Half the radius of curvature; Geometric centre of the spherical mirror

Accepted Answer

A→P, B→S, C→R, D→Q

Answer

A→R, B→S, C→P, D→Q

Answer

A→Q, B→P, C→S, D→R

Answer

A→S, B→Q, C→P, D→R

Reflection & Spherical Mirrors: NEET practice questions

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