Physics-Light (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 26 - 31 of 31

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Question number: 26

» Physics » Light

MCQ▾

Question

Our eye is most sensitive for which of the following wave length?

Choices

Choice (4) Response

a.

6500 Å

b.

4500 Å

c.

Equally sensitive for all wave lengths of visible spectrum

d.

5500 Å

Question number: 27

» Physics » Light

MCQ▾

Question

How does a light normally travel?

Choices

Choice (4) Response

a.

Always towards a dark area

b.

In a curved line

c.

In concentric circles

d.

In a straight line

Question number: 28

» Physics » Light

MCQ▾

Question

When a ray of light is going from one medium to another its

Choices

Choice (4) Response

a.

Wavelength increases

b.

Wavelength remains same

c.

Frequency remains same

d.

Frequency increases

Question number: 29

» Physics » Light

MCQ▾

Question

If the top half of a convex lens is covered with black paper,

Choices

Choice (4) Response

a.

The intensity will be reduced to half

b.

The top half of the image will disappear

c.

The bottom half of the image will disappear

d.

The magnification will be reduced to half

Question number: 30

» Physics » Light

MCQ▾

Question

Sun is visible a little before the actual sunrise and until a little after the actual sunset. This is due to

Choices

Choice (4) Response

a.

Total internal reflection

b.

Refraction

c.

Reflection

d.

Polarization

Question number: 31

» Physics » Light

MCQ▾

Question

A ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation which of the following is true?

An equilateral glass prism placed on horizontal table

An Equilateral Glass Prism Placed on Horizontal Table

Find true option for minimum deviation

Choices

Choice (4) Response

a.

RS is horizontal

b.

QR is horizontal

c.

Either PQ or RS is horizontal

d.

PQ is horizontal

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