Question # 1

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

How many tubes or electron guns used in a colour television set:

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Two

Four

Five

Three

Which device is used to store charge:

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Resister

Capacitor

Dielectric

Fuse

The basic operations performed by a computer are:

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Arithmetic operations

Non-arithmetic operations

Logical operations

Both a and c

SI unit of electric intensity is:

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NC

NC^-1

NC^-2

NC^-3

Two charged spheres are separated by 2 mm. Which of the following would produced the greatest attractive force?

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+1 q and +4q

-1 q and -4q

+2 q and +2q

+2 q and -2q

Sound waves having frequency lower than 20 Hz are called:

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Ultrasonic

Infrasonic

Audible

Echo

One micro coulomb charge is equal to:

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10^-3 C

10³C

10⁶C

10^-6C

Safe level of noise depends on factors:

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One

Two

Three

Four

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

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

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