Question # 1

For working of heat engine, there must be.

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A source

A sink

either of these

Both of these

An immediate source of energy for our body is:

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mango

Glucose

mushroom

meat

Angular momentum has the same unit as

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Impulse x distance

Power x time

Linear x time

work x frequency

If 'N' is number of lines rule don the grating having length 'L' then grating element 'd' is given by.

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N/L

2N/L

L/N

N/2L

If the object is at 5 cm from the lens of simple microscope than its magnifying power will be.

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5

10

15

25

If a mass of a body is doubled, then acceleration becomes.

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Double

Half

One fourth

Constant

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

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

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

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

The direction of null vector can be

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(+) ve

(-) ve

Arbitrary

Zero

Reapters are placed in new system at distance of.

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30 km

50 km

80 km

100 km

Which of the following is mechanical wave

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Heat

Light

Sound

None of these

The tides raise in the sea roughly

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Once a day

Twice a day

Three a day

Four time a day

the distance covered during one vibration of an oscillating body in terms of amplitude 'A' is

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A/2

A

2A

4A

The distance between two consecutive wave front is equal to

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One wave length

Two wave length

Half wave length

Three wave length

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

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Physics Fsc Part 1 Online Test MCQs With Answers

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