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Guest practice

Quarter 2

Questions
20
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0
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1

Which law of reflection states that the angle of incidence is equal to the angle of reflection?

2

Unlike charges:

3

Infrasound has frequency:

4

What is an electric field?

5

Charging a body without touching it is called:

6

Hypermetropia is corrected using:

7

The image formed on the retina of the human eye is:

8

The region of high pressure in a sound wave is called:

9

Gravitational lensing occurs due to:

10

The phenomenon of bending of light when it passes from one medium to another is called:

11

Which color has the longest wavelength?

12

Gold leaves are used in an electroscope because they are:

13

When a charged body is earthed, it becomes:

14

The bones of middle ear are called:

15

Which device protects buildings from lightning?

16

Charging by friction involves:

17

The part of ear that collects sound waves is:

18

The graphical representation of sound is called:

19

Electric field lines start from:

20

Pitch of sound depends upon:

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