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NAT I Medical Physics MCQs With Answers

Question # 1

A charge Q is divided into two parts q and Q - q and separated by a distance R. the force of repulsion between them will be maximum when:

Choose an answer

q = Q/4

q = Q/2

q = Q

None of these

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Question # 2

In case of p-n junction diode at high value of reverse bias the current rises sharply The value of reverse bias is known as

Choose an answer

Cut off voltage

Zener voltage

Inverse voltage

Critical voltage

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Question # 3

In an AC circuit a resistance of R ohm i connected in series with an inductance L if phase angle between voltage and current be 45^o the value of inductive reactance will be

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R/4

R/2

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Question # 4

Relation between pressure (P) and energy (E) of a gas is

Choose an answer

P = 2/3 E

P = 1/3 E

P = 3/2 E

P = 3 E

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Question # 5

Bernoulli's equation is based upon law of conservation

Choose an answer

Mass

Momentum

Energy

None of these

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Question # 6

A pendulum clock set to give correct time in Karachi is taken to Quetta it would give correct time if

Choose an answer

The mass of the pendulum is increased

The mass of the pendulum is decreased

The length of the pendulum os increased

The length of the pendulum is decreased

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Question # 7

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Choose an answer

R²

1/R

(1/R)²

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Question # 8

Choose the correct statement

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Both an ammeter and voltmeter should have small resistance

Both an ammeter and a voltmeter should have large resistance

An ammeter should have large resistance and a voltmeter should have small resistance

An ammeter should have small resistance and a voltmeter should have large resistance

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Question # 9

The structure of solids is investigated by using

Choose an answer

Cosmic Rays

X-rays

Intra red Radiation

y-rays

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