Question # 1

1 nano farad is equal to:

Choose an answer

1 x 10^-12 F

1 x 10⁹F

1 x 10^-9F

1 x 10^-6F

Two uncharged objects A and B are rubbed against each other. When object B is placed near a negatively charged object C, the two objects repel each other. Which of these statements is true about object A.

Choose an answer

Remains uncharged

Becomes positively charged

Becomes negatively charged

Unpredicatable

NOT gate is also called:

Choose an answer

Converter

Inverter

Transmitter

Receiver

In computer terminology information means:

Choose an answer

Any data

Raw data

Processed data

Large data

Safe level of noise depends on factors:

Choose an answer

One

Two

Three

Four

In case of OR and AND operation, if switches s₁ and s₂ both are open then lamp is:

Choose an answer

On

Off

Sometimes on and sometimes off

Neither on nor off

When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate?

Choose an answer

the rod and the paper are oppositely charged

the rod acquires a positive charge

the reod and the paper have the same charges

the rod acquires a negative charge

If a charged body is brought near a negatively charged electroscope and the leaves of electroscope diverge, then the body is:

Choose an answer

Positively charged

Negatively charged

Neutral

None of these

The technique or method used to absorb undesirable sounds by soft and porous surface is called:

Choose an answer

Ultrasonic

Acoustic protection

Infrasonics

Echo

Bats can hear sound of frequency up to:

Choose an answer

100,000Hz

25000Hz

120, 000Hz

1000Hz

The speed of sound in iron at 25°C is:

Choose an answer

5950 m/sec

5900 m/sec

6950 m/sec

6940 m/sec

The brain of any computer system is:

Choose an answer

Monitor

Memory

CPU

Control unit

An object gains excess negative charge after being rubbed against another object, which is:

Choose an answer

Neutral

Negatively charged

Charged

Either, a,b,and c

The intensity of lawn mover is:

Choose an answer

10-1 wm^-2

10-2 wm^-2

10-3 wm^-2

10-4 wm^-2

The intensity level of whispering is:

Choose an answer

20 dB

30 dB

40 dB

50 dB

The frequency of silent whistle is:

Choose an answer

20,000 Hz – 25000Hz

2000 Hz – 2500Hz

200 KHz – 2000 Hz

25000 KHz

If we double the distance between two charges, what will be the change in the force between them?

Choose an answer

Half

Double

One fourth

Four times

Capacitance is defined as:

Choose an answer

VC

Q/V

QV

V/Q

The speed of sound in air at 100°C is:

Choose an answer

380ms-1

382ms-1

386ms-1

300ms-1

Five joules of work is needed to shift 10 C of charge from one place to another. The potential difference between the places is:

Choose an answer

0.5 V

2 V

5 V

10 V

More Classes

Other Links

Physics 10th Class English Medium Unit 4 Online Test 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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer