Question # 1

The speed of sound in air at 0 ^oC is:

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331 ms^-1

332 ms^-1

333 ms^-1

336 ms^-1

The centre of spherical mirror is called:

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Focus

Axis

Centre

Pole

The electrostatic force acting on two charges each of 1C separated by 1m is about:

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9X10⁹ N

9X10^-9 N

9X10⁸ N

9X10^-8 N

The voltage is decreased by:

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Step-up transformer

Step-down transformer

A.C. generator

D.C. Motor

The device which converts digital quantities into analog quantities is called:

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ADC

DAC

ACD

CAD

To get a design on the computer screen by moving a pointer with the help of mouse is called:

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word processing

graphic designing

data managing

telecommunication

What will be the capacitance of capacitor by joining them in parallel:

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Increased

Much less

Decrease

No change

The galvanometer has been named after the scientist:

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Lewis

Lowry bronsted

Luigi Galvano

Galvano Einstein

Electric potential and e.m.f.:

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Are the same terms

Are the different terms

Have different units

Both b and c

Electric field lines of force were first introduced by:

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Ampere

Farady

Fleming

Coulomb

Electric potential and e.m.f.

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are the same terms

are the different terms

have different units

both b and c

The refractive index of internal coating of optical fibre is:

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1.56

1.51

1.53

1.58

by connecting suitable high resistance in series with galvanometer it will convert into:

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voltmeter

galvanometer

ammeter

multimeter

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