Question # 1

Which among the following radiation has more penetrating power?

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A beta pareticle

A gamma particle

An alpha particle

None of these

Which element is used for the monitoring of thyroid glands?

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Iodine- 131

Phosphorus-32

Carbon-14

Potassium-40

V²/R=:

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Power

Energy

Voltage

Resistance

Watt is equal to:

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Coulomb per second

Newton per second

Volt per second

Joule per second

for which of following ampere second could be the unit:

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energy

current

charge

power

Radiations present in atmosphere due to the presence of different radioactive elements are:

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Cosmic radiations

Background radiations

secondary radiations

Electromagnetic radiations

The half life of plutonium²³⁶Pu₉₄is:

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2.00 years

2.35 years

2.79 years

2.85 years

A digital multimeter is used to measure:

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Current

Resistance

Potential difference

All of above

What happen to the atomic number of an element which emits one alpha particle?

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Increase by 1

Stays the same

Decrease by 2

Decrease by 1

The power of small fan is:

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40 W

50 W

60 W

80 W

When 1 tonne of coal is burnt then amount of energy is released .

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36 x 10⁸ J

36 x 10⁹J

36 J

36 x 10¹⁰J

Which instrument is used to detect current:

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Galvanometer

Voltmeter

Ammeter

Electroscope

The symbol of atomic mass number is:

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A

X

N

Z

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