Light class 8and 7

Light class 8and 7

8th Grade

47 Qs

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Light class 8and 7

Light class 8and 7

Assessment

Quiz

Physics

8th Grade

Practice Problem

Hard

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47 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What makes objects visible?

The total internal reflection taking place in an object

The refracted light from the object

The absorption of light by objects

The reflected light from the object

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the perpendicular drawn at any point on a mirror called?

A) Incident ray

B) Reflected ray

C) Normal

D) Image

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many images are obtained when plane mirrors are arranged parallel to each other?

A) A single image

B) Two images

C) Infinite number of images

D) Zero image

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In our houses, which of the following is used for looking at ourselves?

A) Convex mirror

B) Concave mirror

C) Convex lens

D) Plane mirror

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a periscope, how are the reflecting mirrors arranged?

A) Perpendicular to each other

B) Parallel to each other

C) At an angle of 90 degree

D) At an angle of 60 degree

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the nature of image formed on the retina of human eye of an object?

A) Virtual and erect

B) Virtual and inverted

C) Real and erect

D) Real and inverted

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identify the value of persistence of vision.

A) 1/1 0th of a second

B) 1/12th of a second

C) 1/16th of a second

D) 1/20th of a second

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