Question # 1

From sand, we get a material used for construction with the motion of bodies under the action of forces is called:

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Optics

Mechanics

Thermodynamics

Astrophysics

Silicon can be obtained from:

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Lead

Uranium

An isotope of oxygen

Sand

Radio telescope is used to gather information from

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Earth

Moon only

Far side of the universe

Sea water

The definite number of significant figures in 5000 is:

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Four

Three

Two

One

The maximum possible error in the reading of an instrument is ______ its least count.

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Half of

Quarter of

Equal to

Double than

Dimension of mass is written as:

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M

[M]

(M)

[m]

Number of supplementary units are

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Three

Two

Seven

Five

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

Those quantities which can be measured accurately are known as

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Physical Quantities

Scalar Quantities

Vector Quantities

Non Physical Quantities

Astrophysics is a branch of physics, which deals with

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Sub-atomic

Stars and galaxies

Light and sound

Music

Uncertainty is of following type/types:

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Absolute

Fractional

Percentage

All of these

Particles have the mass smallest of following is:

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Electron

Proton

Neutron

Quark

Total number of base units are

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Three

Five

Seven

Nine

Physics deals with the study of

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Matter

Energy

Both of them

Human Body

Particles have the mass smallest of following is

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Electron

Proton

Neutron

Quark

Which quantity has different dimension?

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Tension

Work

Energy

Torque

At the present time, the main frontiers of fundamental science are

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2

3

4

5

Light year is a unit of:

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Time

Distance

Velocity

Intensity of light

Distance to nearest galaxy from earth is

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10¹⁰m

10¹⁵m

10⁴⁰m

10³⁰m

The system international (SI) is built from _______ kind of unites

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Two

Three

Four

Five

1 gm-cm^-3is equal to

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10³kg-m^-3

10^-3kg-m^-3

1kg-m^-3

10⁶kg-m^-1

Branch of physics which deals with the study of stars and galaxies is called:

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Solid state physics

Astrophysics

Molecular physics

Chemical physics

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

The quantity have dimension of ML²T⁰²will have SI unit of:

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Watt

Newton

Joule

Metre

Which quantity has different dimension:

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Work

Pressure

Energy

Torque

In the equation E=mc²value of c is:

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1,86,000 miles per hour

1,86,000 miles per sec

3 X 10⁸m/sec

Both A and C

Both B and C

The principle characteristics of an ideal standard are

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Inaccessible and Invariable

Accessible and Invariable

Accessible and Variable

None of these

From sand, we get a material used for construction of computer chips. That material is called:

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Germanium

Silicon

Copper

Lead

For addition and subtraction purposes, absolute uncertainties are:

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Added

Subtracted

Multipiled

Divided

Electron is a particle whose mass is:

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Greater than that of a proton

Smaller than of a proton and greater than mass of neutron

Smaller than that of proton or neutron

Greater than that of an atom

Light year is a unit of

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Time

Distance

Velocity

Intensity of light

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ECAT Pre General Science Physics Chapter 1 Measurements Online Test MCQs With Answers

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