Physics-Light (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 8 - 13 of 31

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Question number: 8

» Physics » Light

MCQ▾

Question

An object is placed at a distance of 30 cm from a concave mirror and its real image is formed at a distance of 30 cm from the mirror. The focal length of the mirror is

Choices

Choice (4) Response

a.

15 cm

b.

30 cm

c.

20 cm

d.

45 cm

Question number: 9

» Physics » Light

MCQ▾

Question

Two thin lenses of focal lengths f 1 and f 2 are placed in contact. The focal length of the composite lenses will be

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 10

» Physics » Light

MCQ▾

Question

Figure shows when the as shown two rays A and B being reflected by a mirror and going as A’ and B’. The mirror is

Two rays reflected by the mirror

Two Rays Reflected by the Mirror

Find the type of mirror by using reflected rays

Choices

Choice (4) Response

a.

may be any spherical mirror

b.

is plane

c.

is concave

d.

is convex

Question number: 11

» Physics » Light

MCQ▾

Question

Image is formed for the short sighted person at

Choices

Choice (4) Response

a.

image is not formed at all

b.

behind the retina

c.

retina

d.

before retina

Question number: 12

» Physics » Light

MCQ▾

Question

The image formed on the retina of a human eye is

Choices

Choice (4) Response

a.

virtual and erect

b.

real and inverted

c.

virtual and inverted

d.

real and erect

Question number: 13

» Physics » Light

MCQ▾

Question

When the power of eye lens increases, the defect of vision is produced. The defect is known as

Choices

Choice (4) Response

a.

color blindness

b.

short sightedness

c.

long sightedness

d.

All of the above

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