Question # 1

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

Fringe spacing is inversely proportional to.

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Wave length

Slit separation

Distance between the slit and screen

Frequency of light

A stretched string 2 m long and it has 2 hopes of stationary waves hen the wavelength is

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4 m

2 m

3 m

1 m

A wheel of radius 50 cm having an angular speed of a rad /s have linear speed.

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1.5 m/s

3.5 m/s

2.5 m/s

4.5 m/s

Artificial gravity can be created in the space ship by

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Revolving around the earth

Spinning around its own axis

Increasing its velocity

Decreasing it svelocity

If 30 waves per second pass through a medium at a speed 30 ms-1, then the wavelength is.

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30 m

15 m

1 m

28 m

Two vector can be added by simple arithmetical method when they are at an angle of.

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120^o

90^o

0^o

45^o

The behaviour of gases is discussed by

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Knowing their nature

Knowing their temperature

Kinetic theory

Maxwell's theory

When hot and cold water are mixed, the entropy.

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Decreases

Increases

Remain constant

Zero

Frequency 'f' and time period 'T' are related as

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In young's double slit experiment for the interference the central region will be

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Dark

Bright

Coloured

None of these

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

The kinetic energy of molecules of an ideal gas at absolute zero is

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Very low

Very high

Zero

First increases then decreases

Which is nooptically active

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Sugar

Tartaric acid

Water

Sodium chloride

Substances that don't flow easily has

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Large co-efficient of viscosity

Small co-efficient of viscosity

Medium co-efficient of viscosity

Zero-coefficient of viscosity

Venturimeter is used ot measure.

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Speed of fluid

Pressure of fluid

Volume of fluid

Mass of fluid

When speed of a body is doubled then its

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K.E. is doubled

P.E. is doubled

Acceleration of doubled

Momentum is doubled

The SI unit of work is

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Newton

Joule

Mol

Calorie

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