Question # 1

G.P. Thomson observer experimentally that electrons and neutrons possess

Choose an answer

particle-like properties

wave-like properties

neither particle nor wave like properties

none of these

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Choose an answer

Mechanical waves

Electromagnetic waves

Matter waves

All of them

The wave nature of light was proposed by:

Choose an answer

Newton

Thomas Young

Huygen

None of these

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Choose an answer

400 m/sec

40 m/sec

430 m/sec

300 m/sec

A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

Choose an answer

38 m/sec

3.8 m/sec

0.6 m/sec

None of these

The mass of the object is a quantities measure of its

Choose an answer

speed

velocity

acceleration

inertia

A solenoid is a coil of wire which is:

Choose an answer

Short, loosely wound, cylindrical

Long, tightly wound, spherical

Long, loosely wound, cylindrical

Long, tightly wound, cylindrical

None of these

Magnetic flux and flux density are related by

Choose an answer

Flux density = flux x area

Flux density = flux / area

Flux density = flux - area

None of these

In a charged capacitor the energy is stored in

Choose an answer

Both in positive and negative charges

Positive charges

The edges of the capacitor plates

The electric field between the plates

Which of the following does not have the same units:

Choose an answer

Work

Heat

Kinetic energy

Power

Which of the following is a characteristic of an ideal fluid?

Choose an answer

it is non-viscous

it is incompressible

it's motion is steady

all of the above

U-238 present in the natural uranium is about:

Choose an answer

59%

0.007%

99%

39%

19%

The weight 'mg' of the bob is resolved into

Choose an answer

one component

two components

three components

four components

Stars twinkle due to

Choose an answer

The fact that they do not emit light continuously

The refractive index of earth's atmosphere fluctuates

The Star's atmosphere absorbs its light intermittently

None of these

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Choose an answer

Frequency of beat changes with time

Frequency of beat changes with location of observer

All particles of medium vibrate simple harmonically with frequency equal to the difference between frequencies of component waves

Amplitude of vibration of particles at any point changes simple harmonically with frequency equal to difference between two component waves

If the object is placed at 12 cm distance from a convex lens of focal length 6 cm, then we get an image of ____ as that of object:

Choose an answer

Double the size

Same size

Half the size

None of these

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Choose an answer

Maximum

Minimum

Zero

Very small

None of these

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Choose an answer

stethoscope

thermometer

manometer

barometer

An A.C varies as a function of

Choose an answer

Current

Voltage

Time

Charge

Gas constant per molecule is called:

Choose an answer

Universal gas constant

Stefen's constant

Boltzmann constant

Gravitation constant

According to Stoke's law, drag force depends on

Choose an answer

Initial velocity

Final velocity

Terminal velocity

Instantaneous velocity

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?

Choose an answer

0.1 m/s

10 m/s

1 m/s

0.01 m/s

Flight of rocket in the space is an example of

Choose an answer

Newton's first law

Newton's third law

Newton's second law

all of them

To display a digit of EIGHT, the number of ON LED'S are:

Choose an answer

Two

Three

Five

Seven

Eight

In which of the following components, pn-junction is used

Choose an answer

light emitting diode

photo diode

photo voltaic cell

all of these

Angular velocity is a:

Choose an answer

Scalar quantity

Vector quantity

Complex quantity

None of these

Surface density of charge is defined as

Choose an answer

Charge per unit volume

Charge per unit length

Charge per unit area

Charge per unit mass

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Choose an answer

modification

voltage

current

resistance

According to the Bernoulli's equation, where the speed of the fluid is high, the pressure will be

Choose an answer

low

zero

high

all of them

If 250V is the RMS value of alternative voltage, then its peak value V_owill be:

Choose an answer

353.5V

250V

175V

zero

400V

The passage of current is accompanied by a magnetic field in the surrounding space:

Choose an answer

Always accompanied

Sometimes accompanied

Never accompanied

Any of above

None of these

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