Question # 1

The direction of induced e.m.f. in a circuit is in accordance with conservation of.

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Mass

Charge

Momentum

Energy

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

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Neutral

Negatively charged

Charged

Either, a,b,and c

A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance?

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5.0 cm

7.5 cm

15 cm

20 cm

Program up gradation refers to:

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Program enhancement

Program identification

Program development

Program implementation

In compound microscope, the objective have focal length than eye-piece:

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Smaller

Larger

Equal

Equal and larger

Transformer works on _______ supply.

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A.C

D.C

Battery

Both A and B

1 MB =

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1022KB

1023KB

1024KB

1025KB

Power of convex lens is 10 D. Its focal length is:

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100 m

10 m

1 m

0.1 m

Capacitors are used to store:

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Current

Voltage

Charge

Resistance

Which instrument measures the potential difference:

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Voltmeter

Barometer

Galvanometer

Ammeter

Mathematical formula of spring constant is:

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F/x

X/F

F/t

F/m

The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be:

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Absorbed

Totally reflected

Partially reflected and partially transmitted

Totally transmitted

Bouncing back of light after striking the surface is called:

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Refraction

Reflection

Diffraction

Interference

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