Question # 1

The 1st practical electric battery is known as:

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Voltaic

Pile

Voltaic pile

Voltaic cell

SI unit of capacitance is:

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Joule

Volt

Watt

Farad

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

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5950 m/sec

5900 m/sec

6950 m/sec

6940 m/sec

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

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0.5 V

2 V

5 V

10 V

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

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380ms-1

382ms-1

386ms-1

300ms-1

Sound waves having frequency higher than 20,000 Hz are called:

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Ultrasonic

Infrasonic

Audible

Echo

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

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On

Off

Sometimes on and sometimes off

Neither on nor off

One micro coulomb charge is equal to:

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10^-3 C

10³C

10⁶C

10^-6C

Electric field lines:

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always cross each other

never cross each other

cross each other inthe region of strong field

cross each other in the region of weak field

The pitch of a sound is most closely related to its:

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Wave form

Period

Amplitude

Frequency

Bats can hear sound of frequency up to:

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100,000Hz

25000Hz

120, 000Hz

1000Hz

Sound waves having frequency lower than 20 Hz are called:

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Ultrasonic

Infrasonic

Audible

Echo

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Physics 10th Class English Medium Unit 4 Online Test MCQs With Answers

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