Question # 1

In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called

Choose an answer

Quadratic equation

Equation of discontinuity

Equation of continuity

None of the above

The ratio of linear stress/linear strain is called as

Choose an answer

Yong's modulus

Bulk modulus

Shear modulus

Modulus

1 amu is equal to

Choose an answer

1.66 x 10^-24kg

1.66 x 10^-19kg

1.66 x 10^-34kg

1.66 x 10^-27kg

The unit of intensity of electric field is

Choose an answer

newton/coluomb

jule/coluomb

volt x metre

newton/metre

A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh^-1. its acceleration will be

Choose an answer

7.71 m s^-2

0.5m s^-2

0.15m s^-2

0.092m s^-2

The induced emf in a coil is proportional to:

Choose an answer

Magnetic flux through a coil

Rate of change of magnetic flux through the coil

Area of the coil

Product of magnetic flux and area of the coil

The magnitude of chemical Effects depends upon:

Choose an answer

Nature of liquid

Quantity of Electricity passed through the liquid

Color of the liquid

Both (A) and (C)

Both (A) and (B)

The bands below the valence band are

Choose an answer

completely filled and play active part in conduction process

completely filled and plays no part in conduction process

completely filled and play active part in conduction process

not completely filled and play no part in conduction process

The temperature at which the speed of sound becomes double as was at 27°C is

Choose an answer

273°C

0°C

927°C

1027°C

The device which can convert heat energy into electrical energy is called:

Choose an answer

Thermistor

Thermometer

Thermostat

Thermocouple

Both (C) and (D)

Energy is not carried by

Choose an answer

Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

Heating effect caused by an electric circuit is written

Choose an answer

H = I²Rt

H = I²R

H = IR²t

H = IR²

An electronic computer is basically a vast arrangement of electronic switches which are made from

Choose an answer

Resistors

Transistors

N -type crystals

P-Type crystals

Capacitors

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

Which of the following quantities remain constant in step up transformer?

Choose an answer

Current

Voltage

Power

Heat

In the forward biases situation, the current flowing across the p-n junction is a few:

Choose an answer

amperes

Milli amperes

Micro amperes

Pico amperes

None of these

Electromagnetic radiation or photons interact with matter in

Choose an answer

two distinct ways

three distinct ways

four distinct ways

five distinct ways

The unit of resistance is

Choose an answer

volt

ampere

ohm

coat

A beam of electrons is provided by an

Choose an answer

electron gun

Suppray

Injection

None of these

While describing the motion of a simple pendulum, the frictional effects are

Choose an answer

taken into account

completely ignored

partially ignored

none of them

Most of the electrons in the base of an NPN transistor flow

Choose an answer

Out of the base lead

Into the collector

Into the emit

Into the base supply

The electric flux through any surface depends upon:

Choose an answer

Intensity of electric field

Area of the surface

Angle between intensity and area

All of these

None of these

Resistance of a conductor is increased, the currant will

Choose an answer

Decrease

Increase

Remain the same

None of these

If we increase the length of a simple pendulum four times, its time period will become

Choose an answer

2 times

3 times

4 times

6 times

A one microfarad capacitor of a TV is subjected to 4000 V potential difference. The energy stored in capacitor is

Choose an answer

8 J

16 J

4 x 10^-3J

2 x 10^-3J

An alpha particle is accelerated through a potential difference of 10⁶volt. Its kinetic energy will be

Choose an answer

1 MeV

2 MeV

4 MeV

8 MeV

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Choose an answer

IT = 10^-4G

IT = 10⁵G

IT = 10³G

IT = 10⁴G

The energy of the 4th orbit in hydrogen atom is

Choose an answer

2.5 ev

- 3.5 ev

-0.85 ev

-13.6 ev

Curie is a unit of

Choose an answer

reluctance

resistivity

binding energy

radioactivity

The greatest stress that a material can endure without losing the proportionality between stress and strain is called

Choose an answer

plastic line

breaking point

proportional limit

none of them

When heat is added into the system then change in entropy is

Choose an answer

negative

positive

zero

any one of them

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