Question # 1

Ball pen functions on the principle of

Choose an answer

Viscosity

Boyle's law

Gravitational force

Surface tnesion

A body with frequency of would complete one vibration in:

Choose an answer

f seconds

1/f seconds

1 second

f²second

Examples of crystalline solids are:

Choose an answer

Cooper

NaCl

Zirconia

Both (A) and (B)

All of these

Rate of diffusion is

Choose an answer

Faster in solids than in liquids and gases

Faster in liquids than in solids and gases

Equal to solids, liquids and gases

Faster in gases than in liquids and solids

The center of mass of a sphere lies at:

Choose an answer

The axis of the sphere

Circumference of sphere

Center of the sphere

None of them

The square of 0.4 is:

Choose an answer

Greater than 0.4

Smaller than 0.4

Equal to 0.4

None of them

Alternating current is produced by a voltage source which polarity:

Choose an answer

Remains the same

Reverse after period T

Keeps on reversing with time

Reverse after every time interval T/2

Both (C) and (D)

At constant volume temperature is increased. Then

Choose an answer

Collision on walls will be less

Number of collisions per unit time will increase

Collision will be in straight lines

Collision will not change

The angle between centripetal force and displacement of the body moving in a circle is:

Choose an answer

0°

90°

180°

None of these

The value of the Stephen's constant for black body radiations is given by

Choose an answer

5.6 x 10⁸Wm^-2K^-4

5.67 x 10^-8Wm^-2K^-4

2.9 x 10^-3mK

2.9 x 10³mK

The velocity of sound in air not effected by changes in

Choose an answer

Moisture contents in air

Temperature of air

The atmosphere pressure

The composition of air

A person standing near the track of a fast moving train has tendency to fall towards it because of

Choose an answer

Vibration due to motion of train

Gravitation force of attraction between person and trains

The high speed of train

Some other effect

The electric field due to an infinite long thin wire at a distance R varies as

Choose an answer

1/R

1/R²

R

R²

The use of chips in electrons is described in the form of:

Choose an answer

Yellow boxes

Black boxes

Red boxes

White boxes

Orange boxes

The counter, which also provides the power to the G.M. tube is called:

Choose an answer

Thin mica window

thin glass window

Airy window

Wooden window

None of these

In the equation E=mc² value of c is?

Choose an answer

186000 miles per hour

186000 miles per sec

3 X 10⁸m/sec

Both A and C

Both B and C

The temperature of gas is produced by

Choose an answer

At potential energy of its molecules

The kinetic energy of its molecules

The attractive force between its molecules

The repulsive force between its molecules

The body passing a viscous medium affected by:

Choose an answer

One force only

Two forces only

Four forces

None of these

The range of wavelengths of colurs in the visible colours is

Choose an answer

140 nm to 456 nm

10 nm to 56 nm

410 nm to 656 nm

910 nm to 956 nm

None of these

Which one of the least multiple:

Choose an answer

Pico

Femto

Nano

Atto

When angular acceleration is positive, the body rotates:

Choose an answer

Slower

Slowest

Faster

None of these

A rheostat can e used:

Choose an answer

As variable resistor

As potential divider

For varying the current

All of these

None of these

The force which maintain the strict long-range order between atoms of a crystalline solid is the:

Choose an answer

Nuclear force

Cohesive force

Adhesive force

Coulomb force

None of these

Victor de-Brogile received the Nobel prize in physics in

Choose an answer

1925

1929

1932

1935

Conventional the angular Velocity is Directed at an angle of:

Choose an answer

90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of above

A curie represents a very strong source of

Choose an answer

α-particle

β-particle

γ-particle

none of these

The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90° with each other is:

Choose an answer

20 m/sec

5 m/sec

3 m.sec

None of these

Within each domain, the magnetic field of all the spinning electrons are

Choose an answer

parallel

antiparallel

perpendicular

all of them

A digital system deals with quantities which has discrete values:

Choose an answer

Two in number

One in number

Three in number

Four in number

None of these

In an A.C. circuit, a resistance of R ohm is connected in series with an inductance L. If phase angle between voltage and current be 45°. the value of inductive reactance will be

Choose an answer

R/4

R/2

R

Cannot be found with the given data

Substances which break just after the elastic limit is reached, are known as

Choose an answer

brittle substances

ductile substances

plastic substances

elastic substances

More Classes

Other Links

ECAT Pre General Science Physics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer