Question # 1

A rocket carries its own fuel in the form of

Choose an answer

liquid only

liquid or solid

liquid and solid

liquid or solid and oxygen

According to Einstein, with the great increase in the speed of the body, the relativistic mass of the body

Choose an answer

Remains constant

Decreases

Increases to infinity

Reduced to zero

Pressure of a gas at constant volume is proportion to

Choose an answer

Total energy of gas

Average P.E to molecules

Average K.E of molecules

Total internal energy of gas

Nuclei that have the same charge number but different mass number are called

Choose an answer

isotones

isomers

isotopes

isobars

An A.C. voltage is applied across the inductor. When the frequency of the voltage is increased, the current

Choose an answer

Decreases

Increases

Does not change

Momentarily goes to zero

The direction of velocity is along the direction of

Choose an answer

distance

displacement

acceleration

all of them

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

Choose an answer

17 m/s

33 m/s

17.5 m/s

none

In a transistor, the central region is called

Choose an answer

collector

emitter

base

none of them

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when

Choose an answer

q = Q/4

q = Q/2

q = !

None of these

A ball is dropped vertically down and it takes time t to reach the ground. At time t/2

Choose an answer

The ball had covered exactly half the distance

The velocity of the ball was V/3 where V is the velocity when it reached the ground

The ball had covered less than half the distance

The ball had covered more than half the distance

One electron volt is equal to

Choose an answer

1.6 x 1019eV

6.25 x 1018 eV

1.6 x 1018 eV

6.25 x 1019eV

A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:

Choose an answer

10 m/sec²

20 m/sec²

30 m/sec²

Zero

Triple point of water is

Choose an answer

273.16°F

372.16K

273.16°F

273.16

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

Choose an answer

22 m

6 m

33 m

7.8 m

The relationship between Boltzmann constant k with R and N_Ais given as:

Choose an answer

k = RN_A

k =R/N_A

k = NR/N_A

None of these

Swimming is based on the principle of

Choose an answer

Newton's 1st law

Newton's 2nd law

Newton's 3rd law

All

To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance

Choose an answer

5.07 pF

50 pF

0.507 pF

507 pF

Which of the following theory completely explain the three types of materials

Choose an answer

Bohr model of electron distribution

Rutherford atomic model

Pauli's exclusion principle

energy band theory

Neutron was disvovered by:

Choose an answer

Rutherford in 1920

Chadwick in 1922

Bohr in 1913

Compton in 1927

None of these

The chemical behaviour of an atom is determined by

Choose an answer

binding energy

atomic number

mass number

number of isotopes

When the p-n junction is forward biased its resistance is of the order of

Choose an answer

few mega ohms

few kilo ohms

few ohms

few milli ohms

Bernoulli's equation is important in the field of

Choose an answer

Electrical circuit

Magnetism

Photoelectric effect

Flow of fluids

The SI unit of magnetic induction is tesla which is equal to

Choose an answer

Newton/ampere-meter or N/A-m

Newton/ampere²-meter or N/A²-m

Newton/ampere²-meter² or N/A²-m²

Newton/ampere²-meter²or N/A²-m²

In a soft iron, domains are

Choose an answer

easily oriented along external field and do not return to original random positions

easily oriented along external field and readily returns to originally random position

do no oriented along external field and also do not returns to originally random position

none of them

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

Choose an answer

2 R

R

R/2

R/4

Newton published laws of motion in his famous book "principia" in

Choose an answer

1867

1667

1676

1687

In case of metallic conductors, the charge carriers are

Choose an answer

Protons

Electrons

Antiprotons

Positrons

Both A and B

The measure of the deformation in a solid when stress is applied to its is called

Choose an answer

elastic constant

young's modulus

strain

elasticity

The smooth or steady streamline flow is known as

Choose an answer

laminar flow

turbulent flow

both of them

none of them

A succession of events which bring the system back to its initial condition is called

Choose an answer

reversible process

irreversible process

a cycle

none of them

The reciprocal of decay constant λ of a radioactive material is:

Choose an answer

Frequency

Half life

Year

Mean life

None of these

More Classes

Other Links

ECAT 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