Question # 1

The critical angle for glass to:

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24^o

48^o

42^o

50^o

The output of a NAND gate is 0 when

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Both of its inputs are 0

Both of its inputs are 1

any of its inputs is 0

any of its inputs is 1

The voltage is decreased by:

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Step-up transformer

Step-down transformer

A.C. generator

D.C. Motor

with the increase in temperature the resistance of pure metals:

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increases

decreases

remains same

none of these

an electrolytic capacitor is used to store large amounts of charge at:

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low voltage

high voltage

neutral

positive

Which is an example of a longitudinal wave:

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Sound wave

Light wave

Radio wave

Water wave

LDR can act as:

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Diode

Switch

Transistor

Rectifier

In electric motor, the brushes are made of:

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Lead

Graphite

Iron

Wood

Information storage device work on the principles of:

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Heat

Sound

Light

Magnetism

If there is divergence of leaves by touching a body with electroscope then the body is:

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Semi conductor

Neutral

charge body

Insulator

Which element is used for the monitoring of thyroid glands?

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Iodine- 131

Phosphorus-32

Carbon-14

Potassium-40

In electrostatic all charges are in:

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The same direction

Opposite direction

Motion

Static state

If A input is 1 and B is zero, then in AND operation output will be:

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0

0.1

1

None of these

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