Question # 1

Body which falls freely under gravity provides good example of motion under:

Choose an answer

Uniform acceleration

Non-uniform acceleration

Uniform velocity

None of these

The power of an electric generating station is expressed in:

Choose an answer

Kilo Jule

Kilowatt-hour

Kilo watt

Watt

When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is

Choose an answer

0.5 J

2 J

0.25 J

1 J

If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:

Choose an answer

250 N m^-1

25 N m^-1

2.5 N m^-1

None of these

Earth is considered to be

Choose an answer

a non-inertial frame

an inertial frame

an accelerated frame

none of the above

When quarter of a circle is completed, phase of vibration is:

Choose an answer

90°

180°

45°

360°

Which quantity has the same units as impulse

Choose an answer

force

work

linear momentum

acceleration

A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be:

Choose an answer

10 NS

100 NS

140 NS

200 NS

The branch of physics which deals with the structure and properties of solids is called:

Choose an answer

Plasma physics

Solid state physics

Any of above

Astrophysics

A rotating wheel accelerates up to the value of 0.75 rev/sec²after 2 seconds of its start. Its angular velocity becomes:

Choose an answer

9.42 rad/sec

2.6 rev/sec

1.5 rev/sec

Both A and C

Work is always done on a body when:

Choose an answer

A force acts on it

It moves through certain distance

None of A and B is correct

Both A and B is correct

The error may occur due to:

Choose an answer

Negligence

Faulty apparatus

Inappropriate method

all of these

If the distance of separation between two chares is increased, the electrical potential energy of the system will

Choose an answer

Increase

Decrease

May increase or decrease

Remain the same

For two resistance wires joined in parallel, the resultant resistance is 6/5 ohm. When one of the resistance wire breaks, the effective resistance becomes 2 ohm. The resistance of the broken wire is

Choose an answer

3/5 ohm

2 ohm

6/5 ohm

3 ohm

According to the Max plank, energy is redialed or absorbed in

Choose an answer

discrete packets

continuous waves

either of them

none of these

Particles have the mass smallest of following is:

Choose an answer

Electron

Proton

Neutron

Quark

An induced current can be produced by:

Choose an answer

Constant magnetic field

Changing magnetic field

Varying magnetic feild

Constant electric field

None of these

Shock absorber of the car is an example of

Choose an answer

resonance

forced oscillations

interference

damped oscillations

A 10 F capacitor is charged to a potential difference of 50 V and is connected to another uncharged capacitor in parallel. Now the common potential difference becomes 20 volt.The capacitance of second capacitor is

Choose an answer

10μF

20μF

30μF

15μF

The dimensions of work

Choose an answer

[MLT^-1]

[MLT^-2]

[ML²T^-2]

[MLT]

Specific heat at constant pressure is greater than the specific heat at constant volume because

Choose an answer

Heat is used up to increase temperature at constant pressure

Heat is used by gas for expansions purposes at constant pressure

Heat is use dup to increase internal energy

The above statement is invalid

The smallest three dimensional basic structure in a crystalline solid is called

Choose an answer

lattice point

crystal lattice

cubic crystal

unit cell

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Choose an answer

Decreases

Increases

Remains same

Zero

The motion of molecules in gases is:

Choose an answer

Orderly

Random

Circular

All of these

The number if neutrons in the nucleus of ₉₂U²³⁵are

Choose an answer

Infinite

92

235

143

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

Choose an answer

Each have same number of molecules

Don't have same number of molecules

Can't be predicted

None

The number of vibrations in two seconds can be expressed as______if frequency of vibration is f.

Choose an answer

f

2 f

3 f

1/2 f

Braking radiation causes:

Choose an answer

Continuous spectrum

Line Spectrum

Band spectrum

Discrete specturm

All of these

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Choose an answer

100 K

273 K

0 K

-273 K

A body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:

Choose an answer

Radius of the circle

Twice the radius

Thrice the radius

None of these

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Choose an answer

F = B²

F = 0

F = B

F = B/2

More Classes

Other Links

Physics ECAT Pre Engineering 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