Question # 1

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

Choose an answer

1310 W

670 W

810 W

1210 W

The value for systolic blood pressure for a normal healthy person is

Choose an answer

140 torr

80 torr

90 torr

120 torr

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Choose an answer

A greater than than of B

A is equal to that of B

A is less than that of B

A is twice the pressure of B

What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10^-2Wb, and change in current is 0.01 A?

Choose an answer

2 H

3 H

1/2 H

Zero

The second law gives the relationship between

Choose an answer

mass and velocity

force and acceleration

velocity and acceleration

mass and weight

The emf is measured in:

Choose an answer

Newton

Volt

J/C

Both A and B

Both B and C

A semi-conductor in its extremely pure form is known as

Choose an answer

extrinsic semi-conductor

intrinsic semi-conductor

either of them

none of them

In case of metallic conductors, the charge carriers are

Choose an answer

Protons

Electrons

Antiprotons

Positrons

Both A and B

Ferromagnetic substances lose their magnetism when heated above a certain temperature, known as

Choose an answer

critical temperature

curie temperature

high temperature

fixed temperature

Which one of the following has larger value of relative permitivity E_rat room temperature?

Choose an answer

Vaccum

Air

Glass

Water

Work done along a closed path in a gravitational force is:

Choose an answer

maximum

Minimum

Zero

Unity

A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:

Choose an answer

Zero

Of smaller magnitude

Of larger magnitude

Sometimes B, sometimes C

Neither of these

The efficiency of petrol engine is usually not more than 25% to 30% because of

Choose an answer

friction

heat losses

both of them

none of them

Radium was discovered by:

Choose an answer

Becquerel

Marie curie

Pierre curie

Rutherford

Both (B) and (C)

The strength of magnetic field at certain points around a wire depends upon:

Choose an answer

Value of current passing

Distance from the current element

Color of the material

Both (A) and (B)

Both (B) and (C)

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Choose an answer

speed

height

none of them

both of them

The fourth band is a:

Choose an answer

Silver band

Red band

Gold band

Either A or C

Either A or B

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

Choose an answer

light emitting diode

photo diode

photo voltaic cell

all of these

Radiation detector are used to

Choose an answer

measure intensity of radiation

measure energy of radiation

difference between different types of radiation

all the above

A body moving with an acceleration of 5 m/sec²started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

Choose an answer

150 m

250 m

350 m

400 m

At resonance, the impedance of RLC series circuit is

Choose an answer

Maximum

Zero

Minimum

Determinate

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

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

Choose an answer

P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

SI unit of wave length is:

Choose an answer

Kilometer

Metre

Centimetre

Hertz

A typical rocket consumes about

Choose an answer

100 kg s^-1of fuel

1000 kg s^-1of fuel

10000 kg s^-1of fuel

100000 kg s^-1of fuel

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

Choose an answer

1/3 V

2/3 V

3/2 V

3V

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Choose an answer

Non-uniform density

uniform density

high density

low density

A unit cell is smallest basic structure which is:

Choose an answer

One dimensional

Two dimensional

Three dimensional

Four dimensional

None of these

Amperean path is a:

Choose an answer

Closed path

Rectangular path

Circular path

Any of above

Broken path

Which one of the following elasticizes is possessed by fluids:

Choose an answer

Young's elastic modulus (length)

Bulk elastic modulus (volume)

Modulus of rigidity (shape)

None of these

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

Choose an answer

Double

Remains constant

Half

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