Question # 1

The work done will be zero when the angle between the force and the displacement is:

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45°

60°

90°

180°

Leslie's cube is filled with

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Cold water

Hot water

Mercury

Air

By dividing displacement of a moving body with time, we obtain

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Deceleration

Acceleration

Speed

Velocity

The vector which has the same effect as the combined effect of vectors:

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Negative vector

The vector

Resultant vector

Zero vector

If K = 150 N/m and elasticity is 0.20 m than:

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F = 30N

F= =31N

F = 32N

F = 29N

Normal human body temperature is:

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15 ^oC

37^oC

37^oF

98,6 ^oC

It base of a right angled triangle is 3 cm and its perpendicular is 3 cm.Then its hypotenuse will be

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2 cm

4 cm

6 cm

5 cm

The weight of a body is 100 N its weight on moon is :

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0.17 Kg

1.7 N

17 N

170 N

________ is used to measure the force or weight of a body :

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Physical balance

Spring balance

A and B both

None

Motion of butterfly is an example of.

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Random

Circular motion

Linear motion

Vibratory motion

Dull black surface are good ____________

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Absorber

Radiator

Conductor

None of these

Which instrument is most suitable to measure the internal diameter of a test tube.

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Metre rule

Vernier Callipers

Measuring tape

Screw gauge

Metals are good conductor of heat due to:

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Free electrons

Reamain same

Small size of their molecules

Rapid vibration of their atoms

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