Physics-Light (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 4 - 8 of 10

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Question number: 4

» Physics » Light

MCQ▾

Question

Which one among the following is used to make periscopes?

Choices

Choice (4) Response

a.

Concave mirror

b.

Concave lens

c.

Plane mirror

d.

All of the above

Question number: 5

» Physics » Light

MCQ▾

Question

A printed page is seen through a glass slab place on it. The printed words appear raised. This is due to

Choices

Choice (4) Response

a.

refraction at the lower surface of the slab

b.

refraction at the upper surface of the slab

c.

partial reflection at the upper surface of the slab

d.

partial reflection at the lower surface of the slab

Question number: 6

» Physics » Light

MCQ▾

Question

Cathode rays are produced when high electric voltage is applied to the gas held in a discharge tube at a pressure of about

Choices

Choice (4) Response

a.

Equation atm

b.

Equation atm

c.

Equation atm

d.

Equation atm

Question number: 7

» Physics » Light

MCQ▾

Question

Which one of the following is not correct about cathode rays?

Choices

Choice (4) Response

a.

They are deflected to the positive plate of electromagnetic field

b.

The nature of cathode rays does not depend upon the nature of gas taken in the discharge tube

c.

The nature of cathode rays depends upon the nature of gas taken in the discharge tube

d.

Cathode rays are made up of material particles

Question number: 8

» Physics » Light

MCQ▾

Question

Two plane mirrors are inclined to each other at an angle of Equation as shown in figure. A ray of light falls on the mirror Equation at angle Equation and after reflection, falls on the other mirror Equation from which it get reflected by angle i. The value of third angle is?

Two plane mirrors named M1andM2

Two Plane Mirrors Named M1andM2

Find the third angle made by reflected ray from mirror M2

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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