Light (CBSE Class-8 Science): Questions 28 - 33 of 37

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Question number: 28

» Light » Types of Reflection » Diffused Reflection

MCQ▾

Question

Diffuse reflection is defined as:

Choices

Choice (4) Response

a.

Reflection from any smooth surface

b.

Reflection from any rough surface

c.

Irregular reflection

d.

Both b. and c. are correct

Question number: 29

» Light » Human Eye » Care of Eyes

MCQ▾

Question

You can cure for your eye by putting on protective eyewear whenever

Choices

Choice (4) Response

a.

You play sports

b.

When you are doing projects in the science labs

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 30

» Light » Laws of Reflection » Incident Ray, Reflected Ray

MCQ▾

Question

A reflected ray is:

Choices

Choice (4) Response

a.

Ray strikes the reflecting surface

b.

A light ray which bounces back into same medium after reflection from reflected surface.

c.

Perpendicular line

d.

All of the above

Question number: 31

» Light » Human Eye » Functioning of Human Eye

MCQ▾

Question

Accommodation is the ability of the eye

Choices

Choice (4) Response

a.

To change focal length of the eye lens so as to always obtain the image at the retina

b.

To see distant objects and cannot see near objects

c.

Can see near objects and cannot see distant objects

d.

All of the above

Question number: 32

» Light » Reflections » Reflected Light Can Be Reflected Again

MCQ▾

Question

Periscope is defined as:

Choices

Choice (4) Response

a.

An instrument used to see above obstacles

b.

An arrangement in which beautiful patterns are formed

c.

Right-left reversal of image by a plane mirror

d.

All of the above

Question number: 33

» Light » Laws of Reflection » Angle of Incidence and Angle of Reflection

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Angle of incidence

b.

Angle of reflection

c.

Perpendicular

d.

All of the above

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