Question # 1

Size of the molecules is much smaller as compared to the

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Mass of the molecules

Distance between the molecules

Density of the molecules

Volume of the molecules

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

Beats can be heard when difference of frequency is not more than.

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8 Hz

10 Hz

4 Hz

6 Hz

__ will travel faster than other through an optical fibre.

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Ultraviolet light

Visible light

Infrared light

White light

Turning of radio is example of.

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Mechanical resonance

Electrical resonance

Physical resonance

Biological resonance

The SI units of solid angle is

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Streadian

Radian

Degree

None of these

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

Metre is the basics unit of

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Mass

Force

Velocity

Length

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

Computer Chips are made of

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carbon

Gemanium

Silicon

Sodium

Mercury is used as a thermometric substance because

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It is opaque

Does not stick to glass

Has low specific heat

All of these

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

1 KWh =

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3.6 x 10³K

3.6 x 10⁶K

3.6 x 10⁹J

3.6 x 10¹²J

The terminal velocity of a droplet falling down under gravity is directly proportional to the square of

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Its density

Its radius

Its viscosity

Its elasticity

The horizontal component of velocity of projectile

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Increases

Decreases

Remain same

Decreases and then increases

A finite volume of gas consists of

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Small no. of molecules

Large no. of molecule

Average no. of molecule

None of these

Hygen's principle is used for.

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Explain polarization

Locate the wave front

Find the speed of light

Find the index of refraction

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