Question # 1

the work done in isochoric process is.

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Constant

Variable

Zero

Depend upon condition

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

The SI unit of product of pressure and volume is.

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_Watt

Joule

Pascal

Newton

When a body is whirled in a horizontal circle by means of string, the centripetal force is supplied by

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Mass of body

Velocity of a body

Tension in the string

Centripetal acceleration

The weight of an object an elevator moving down with an acceleration of 9.8 m/s2 will becomes

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Half

Double

Unchanged

Zero

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

X-ray diffraction has been very useful in determining the structure of

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Hemoglobin

Stars

Galaxies

Stones

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

The mass of a body is quantitative measure of its

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Motion

Inertia

Weight

All of these

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

The ideal gas law is.

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PV =NVk

P = NkT

PV =nRT

P=nRT

Inertia may expressed in

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Kg

Newton

Watt

Joule

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

If the pressure of a gas is doubled, then speed of sound is.

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Doubled

Become half

Not affected

Increases by four times

A spring of spring constant 10 N/m after loading that amplitude is 2m. Then the maximum P.E. is

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10 J

20 J

30 J

40 J

If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.

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25%

50%

70%

100%

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11th Class Part 1 Physics Test Online MCQs With Answers

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