Science-Class-8 NCERT (NCERT Based General Studies (GS)): Questions 419 - 426 of 468

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Question number: 419

» Science » Class-8 NCERT » Light (Visually Challenged Human)

MCQ▾

Question

One of the best known and widely used aids by the visually challenged is the:

Choices

Choice (4) Response

a.

Regular Reflection

b.

Incident ray

c.

Braille System

d.

All of the above

Question number: 420

» Science » Class-8 NCERT » Light (Visually Challenged Human)

MCQ▾

Question

Optical aids include:

Choices

Choice (4) Response

a.

Tinted lenses

b.

Bifocal lenses

c.

Contact lenses

d.

All a. , b. and c. are correct

Question number: 421

» Science » Class-8 NCERT » Light (Laws of Reflection)

MCQ▾

Question

A ray which strikes the reflecting surface is called as:

Choices

Choice (4) Response

a.

Incident ray

b.

Normal

c.

Reflected ray

d.

None of the above

Question number: 422

» Science » Class-8 NCERT » Light (Sunlight)

MCQ▾

Question

Sunlight is a composition of:

Choices

Choice (4) Response

a.

Seven colour

b.

Only white light

c.

Five colour

d.

All of the above

Question number: 423

» Science » Class-8 NCERT » Light (Human Eye)

MCQ▾

Question

Size of the Pupil varies with the help of:

Choices

Choice (4) Response

a.

Retina

b.

Cornea

c.

Ciliary muscles

d.

Iris

Question number: 424

» Science » Class-8 NCERT » Light (Types of Reflection)

MCQ▾

Question

Reflection of light from a smooth surface is called as:

Choices

Choice (4) Response

a.

Regular reflection

b.

Specular reflection

c.

Diffuse reflection

d.

Both a. and b. are correct

Question number: 425

» Science » Class-8 NCERT » Light (Types of 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: 426

» Science » Class-8 NCERT » Light (Human Eye)

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

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