Question # 1

The symbol of alpha particles is:

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4AHe

42He

0-1B

00Y

For observing how fast plants are absorbing phosphate fertilizer we use.

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I.131

Ph -32

Co-60

Ar-40

When 1 kg of Uranium -235 is fused then energy released is

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67 x 10¹⁰ J

67 x 10⁷J

67 J

7 J

Who discovered the phenomenon of natural radioactivity?

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Henry Becurial

Merry Curi

Perry

Rutherford

Human skin, in dry conditions, has a resistance of:

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20,000 ohm

100,000 ohm

30,000 ohm

2000 ohm

A thermistor is a dependent resistors:

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Heat

temperature

energy

mass

The current which does not change its direction is called:

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A.C

D.C

Conventional

Transient current

The galvanometer has been named after the scientist:

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Lewis

Lowry bronsted

Luigi Galvano

Galvano Einstein

When a heavy nucleus splits into lighter nuclei,the process would.

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Release nuclear energy

absorb nuclear energy

Release Chemical energy

Absorb Chemical Energy

the resistance of an ammeter should be:

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high

very high

low

constant

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

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Same

Zero

Different

Infinite

Safe limit of radiations exposure in one year.

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4 rem

5 rem

3 rem

6 rem

diamond des not conduct electricity, because it has no:

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free electrons

free protons

free neutrons

free positive charge

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10th Class Physics Chapter 18 Radioactivity English Medium KPK Boards Online Mcqs MCQs With Answers

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