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1

Static charges are produced mainly by:

2

Direct current (DC) flows in:

3

Speed of sound in air at room temperature is approximately:

4

Relays are commonly used in circuits for:

5

To convert a galvanometer into an ammeter, we connect:

6

Which state of matter is most compressible?

7

Which logic gate inverts the input?

8

Which device is used to detect radiation?

9

The internal resistance of a cell causes:

10

Which mirror is used as a rear-view mirror in vehicles?

11

The working principle of electric generator is:

12

Electric field lines start from:

13

Which instrument is used to measure sound level?

14

The dual nature of light means that light behaves as

15

The main function of a diode is to:

16

The energy of electromagnetic radiation depends upon its

17

Echo is an example of:

18

Which type of wave requires a material medium?

19

Which factor does not affect wave speed?

20

The strength of magnetic field around a current carrying wire depends on:

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