Ray Optics-Magnification (NEET Physics): Questions 1 - 5 of 8

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Question number: 1

» Ray Optics » Magnification

MCQ▾

Question

An object of length 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm. The nature and size of the image are,

Choices

Choice (4) Response

a.

Real, inverted, 2.0 cm

b.

Virtual, erect, 1.0 cm

c.

Real, inverted, 1.0 cm

d.

Virtual, erect, 0.5 cm

Question number: 2

» Ray Optics » Magnification

MCQ▾

Question

The relation between the linear magnification m, the object distance u and the focal length f for a spherical mirror is

Choices

Choice (4) Response

a.

m=ffu

b.

m=fuf

c.

m=ff+u

d.

m=f+uf

Question number: 3

» Ray Optics » Magnification

MCQ▾

Question

The focal length of a concave mirror is 30 cm. Find the position of the object in front of the mirror, so that the image is three times the size of the object.

Choices

Choice (4) Response

a.

20 cm or 40 cm

b.

20 cm (only)

c.

30 cm (only)

d.

40 cm (only)

Question number: 4

» Ray Optics » Magnification

MCQ▾

Question

The relation between the linear magnification m, the object distance u and the focal length f for a spherical mirror is

Choices

Choice (4) Response

a.

m=ffu

b.

m=f+uf

c.

m=fuf

d.

m=ff+u

Question number: 5

» Ray Optics » Magnification

MCQ▾

Question

A concave minor of focal length f 0 (in magnitude) produces a reals image n time the size of the object. What is the distance of the object from the mirror?

Choices

Choice (4) Response

a.

(n2+1)nf0

b.

(n+1)nf0

c.

(n+1)nf0

d.

(n1)nf0

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