Question # 1

Which is used to investigate the properties of electron beam:

Choose an answer

LDR

Electroscope

Proton gun

Electron gun

It is used in satellite communication:

Choose an answer

Radio waves

Micro waves

Light waves

Electrical waves

What is fitted in telephone receiver?

Choose an answer

Electromagnet

Diaphragm

Both a and b

None of these

Bouncing back of light after striking the surface is called:

Choose an answer

Refraction

Reflection

Diffraction

Interference

The device which is used to convert sound waves into electrical signal is called:

Choose an answer

Ear piece

Microphone

Transmission channel

Receiver

The output of a two input NOR gate is 1 when:

Choose an answer

A is 1 and B is 0

A is 0 and B IS 1

Both A and B are 0

Both A and B are 1

Optical fibres works on the principle of:

Choose an answer

Reflection

Refraction

Total internal reflection

Diffraction

which is a major cause of fires and explosions at many places:

Choose an answer

match sticks

bombs

static electricity

magnetism

Half of radius of curvature is called:

Choose an answer

Focal length

Principal focus

Axis

None of these

The output of a NAND gate is 0 when

Choose an answer

Both of its inputs are 0

Both of its inputs are 1

any of its inputs is 0

any of its inputs is 1

Which of the following characteristic of a wave is independent of the others .

Choose an answer

speed

frequency

amplitude

wavelength

The S.I unit of electric power is:

Choose an answer

Volt

Watt

Ampere

Joule

The resistance of voltmeter is:

Choose an answer

zero

low

Very high

10Ω

More Classes

Other Links

10th Class Physics English Medium KPK Boards Online Mcqs MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer