Question # 1

When a vector is multiplied by a (-)ve number its direction

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Remains constant

Reversed

Change by 90°

None of these

_______ is bio fuel

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Water

Petrol

Ethanol

Oil

Damping is the process in which energy

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Increases

Remains constant

Dissipates

None of these

For angular momentum of system to remain constant, external torque should be.

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Small

Large

Zero

None

One revolution is equal to.

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90^o

180^o

360^o

270^o

The optical fiber is covered for protection by a

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Glass Jacket

Plastic Jacket

Copper Jacket

Aluminum Jacket

When body acquires terminal velocity them its acceleration 'a' becomes.

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a = 0

a = g

a > 0

a < 0

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%

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

The number of spark plug needed in diesel engine is

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0

2

3

4

Information carrying capacity of optical fibre called.

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Capacity

Band width

Immunity

Ability

Sound waves can not be

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Reflected

Refracted

Polarized

Diffracted

The diver spin faster when moment of inertia becomes.

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smaller

Greater

Constant

Equal

The value of angular momentum is maximum when 0 is

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90^o

60^o

75^o

45^o

As we go from pole to equator of earth, the value of 'g'

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Increase

Decrease

Remain constant

Zero

Young in 1801 performed experiment for the first time about

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Interference

Diffraction

Polarization

Particle nature of light

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11th Class Part 1 Physics Test Online MCQs With Answers

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