Question # 1

Density of water in kgm^-3 is:

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1000

4200

4300

4500

When horse pulls a cart, the action is on the:

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Cart

Earth

Horse

Earth and cart

A ball of mass 1 kg moving wih velocity 2 ms^-1 its momentum will be;

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1 Ns

2 Ns

0.5 Ns

4 Ns

Andromeda is one of the billions of galaxies of known.

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Star

Asteroid

Pole

Universe

The energy present in our food is:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

Length of a rod is L∘ on temperature T∘. After heating upto temperature T, its length L becomes

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L = L∘ (1 + αΔT)

L = L∘ (1 + ΔT)

L = L∘ (1 - αΔT)

L = L∘ (1 -ΔT)

The base quantity is.

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Volume

Torque

Mass

Momentum

Which one is a good conductor?

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cotton

air

wool

iron

Example of bad conductor is:

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Wool

Iron

Graphite

Gold

Einstein mass energy equation is:

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E= mc²

E= m²c

E = 1/2 mc²

2 mc²

P.E is calculated by a formula :

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Mgh

mg

gh

Nil

The weight of body is 147 N, Its mass will be ________ when g = 10 ms^-2

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1.47 kg

14.7 kg

47 kg

1.51 kg

The energy stored in dam is:

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Potential energy

Kinetic energy

Chemical enegy

Nuclear energy

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