Question # 1

Food rich in proteins is:

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potato

grapes

vegetables

bread

Which is nooptically active

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Sugar

Tartaric acid

Water

Sodium chloride

Maximum number of components of a vector may be

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Infinite

One

two

three

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

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

The magnifying power is also called

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Resolving power

Angular magnification

Strength of eye

None of these

The resultant of two forces 3 N and 4 N acting at right angle to each other is

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7 N

5 N

4 N

1 N

The horizontal range of a projectile of 30^owith horizontal is same at an angle.

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40^o

45^o

90^o

60^o

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

The internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

The entropy of the universe with passage of time is.

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Increases

Decreases

Remain constant

Increases and decreases

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

The maximum range of projectile is 100 km, Take 9=10 ms-2, the initial velocity of the projectile will be.

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1000 kms-1

1 kms-1

10 kms-1

100 kms-1

Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will

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Decrease

Unchanged

Half

Increases

The word Fluid means

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To rise

To fall

To flow

To oppose

A spring has a spring constant k. If it is cut in two equal parts, the spring constant of each part will be

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K

2 K

K/2

4K

The time period of an oscillating mass spring system is 10 second. If mass attached to spring id doubled then time period becomes.

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10 sec

20 sec

5 sec

None of these

Which of the following is mechanical wave

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Heat

Light

Sound

None of these

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11th Class Part 1 Physics Test Online MCQs With Answers

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