Question # 1

the range of galvanometer to measure current is:

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few amperes

few micro amperes

few milli amperes

mega amperes

isotopes are atom of same element with different.

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Atomic mass

Atomic number

Number of proton

Number of electron

Who discovered the phenomenon of natural radioactivity?

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Henry Becurial

Merry Curi

Perry

Rutherford

A digital multimeter is used to measure:

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Current

Resistance

Potential difference

All of above

What is the amount of current passing through an electric heater, if it takes 1800C charge pass through it in 3 minute:

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16 A

10 A

100 A

0.1 A

As the temperature of a conductor rises, its resistance:

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Increases

Decreases

Does not change

None of these

The reason carbon dating work is that.

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Plants and animals are such strong emitters of carbon 14

After a plant or animal dies, it stops in fresh carbon

There is so much non radioactive carbon dioxide in the air

When a plant or animal dies.

When resistances are connected in parallel, the current passing through them is:

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Same

Zero

Different

Infinite

The half life of Lead Pb is

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10 hour

10.10 hours

10.6 hours

1 year

in a dry cell, chemical energy changes into:

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mechanical energy

electrical energy

potential energy

kinetic energy

Radioactive isotopes present in atmosphere is

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Cobalt -60

Ph-32

Carbon -14

Carbon -20

The colour of live wire is:

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Black or blue

Green or yellow

White or grey

Red or brown

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Physics 10th Class English Medium Unit 9 Online Test MCQs With Answers

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