Question # 1

The quantity having dimension of ML²T⁰²will earth is:

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80 sec

500 sec

1.802 X 10⁴sec

Aerophysics

Which of the following are the units of intensity of light

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Pois

Lux

Siemen

Candela

Total number of base units are

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Three

Five

Seven

Nine

The maximum possible error in the reading for a meter rod with least count 1 mm is:

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0.005 mm

0.05mm

0.5mm

5.0mm

0.0001210 has ____________ significant figures.

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Four

Three

Seven

Eight

Silicon can be obtained from

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Lead

Uranium

An isotope of oxygen

Sand

The time taken by light to travel from moon to earth is:

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80 sec

500 sec

1.802 X 10⁴sec

Aerophysics

Which quantity has different dimension?

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Tension

Work

Energy

Torque

Which quantity has different dimension:

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Work

Pressure

Energy

Torque

Significant figures in 0.0010 are:

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Four

Three

Two

One

Which one of the least multiple:

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Pico

Femto

Nano

Atto

Density is defined as:

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Mass per volume

Volume per mass

Mass X volume

Mass per length

1 gm-cm^-3is equal to:

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10³kg-m^-3

10^-3kg-m^-3

1 kg-m^-3

10⁶kg-m^-1

The branch of physics which deals with the properties of fundamental particles is called:

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High energy physics

Molecular physics

Astrophysics

Space physics

Uncertainty is of following type/types:

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Absolute

Fractional

Percentage

All of these

If the absolute uncertainty of an instrument is 0.0a1 cm, then its least count will be :

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0.005 cm

0.01 cm

0.02 cm

0.001 cm

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ECAT Physics Chapter 1 Measurements Online Test MCQs With Answers

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