Question # 1

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

One of the isotopes of uranium is²³⁸U₉₂the number of neutrons in the isotopes is.

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92

146

238

330

According to ohm’s law V= :

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I²R

IR²

IR

I/R

the range of galvanometer to measure current is:

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few amperes

few micro amperes

few milli amperes

mega amperes

The galvanometer has been named after the scientist:

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Lewis

Lowry bronsted

Luigi Galvano

Galvano Einstein

If we double both the current and the voltage in a circuit while keeping its resistance constant, the power:

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Remains unchanged

Halves

Doubles

Four time

The half -life of carbon is

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5730 years

5700 years

5720 years

572 years

The half of carbon 14 is

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5720 years

5730 years

5740 years

5750 years

When a uranium (92 protons) ejects a beta particle, how many protons are left in the remaining nucleus?

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92 protons

91 protons

93 protons

89 protons

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2 Ω

4 Ω

8 Ω

12 Ω

The symbol of atomic mass number is:

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A

X

N

Z

Watt is equal to:

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Coulomb per second

Newton per second

Volt per second

Joule per second

in a dry cell, chemical energy changes into:

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mechanical energy

electrical energy

potential energy

kinetic energy

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

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