Question # 1

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Choose an answer

Becomes Half

Becomes double

Is not affected

Becomes one fourth

None of these

Moment of linear momentum is called.

Choose an answer

Moment arm

Moment of inertia

Inertia

Angular momentum

Distance to nearest galaxy from earth is

Choose an answer

10¹⁰m

10¹⁵m

10⁴⁰m

10³⁰m

A capacitor acts as an infinite resistance for

Choose an answer

AC

DC

Both AC and DC

Neither AC nor DC

Laplace formula is derived from

Choose an answer

Isothermal change

Adiabatic change

Isobaric change

None of these

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

The charge carriers in electrolyte are positive and negative

Choose an answer

protons

electrons

ions

none of these

Which one of the following relations is correct?

Choose an answer

1 Wb-m²= Nm^-1A^-1

1 tesla = 104 gausses

1 Wb-m²= 1 tesla

All of the above

In an ideal gas, the molecules have:

Choose an answer

Kinetic energy only

Potential energy only

Both KE and PE

None of these

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

If the two charges in Coulomb's law have double distance between them, then electric force

Choose an answer

Becomes two-fold

Becomes four-fold

Remains the same

None of these

Ohm's law states that

Choose an answer

The current through a resistor is directly proportional to the applied voltage

The voltage across a resistor is directly proportional to the current passing through it

Resistance is the constant of proportionality between the voltage and current

all of these

Speed of light in vacuum depends upon:

Choose an answer

Frequency

Wavelength

Amplitude

None of these

The sum of positive and negative peak values are usually written as

Choose an answer

P-P value

negative

zero

may be positive or negative

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Choose an answer

2.0 x 10^-5/°C

4.0x10^-5/°C

6.0x10^-5/°C

2.33x10^-5/°C

Which of the following material has smaller has life

Choose an answer

uranium

polonium

radium

radian

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Choose an answer

0.1 watt

1 watt

10 watt

100 watt

When a platinum wire is heated, it appears orange red at

Choose an answer

500°C

900°C

1100°C

1300°C

Alternating current is produced by a voltage source which polarity:

Choose an answer

Remains the same

Reverse after period T

Keeps on reversing with time

Reverse after every time interval T/2

Both (C) and (D)

A convex lens acts as diverging lens when the object is placed:

Choose an answer

Between F and 2F

At 2F

With focal length

Beyond 2F

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

Choose an answer

200 m

11000 m

2000 m

8000 m

To see the minor details of the object by microscope, it should have:

Choose an answer

High magnifying power

High resolving power

Am objective of larger focal length

None of these

Faraday's law of electromagnetic induction has been used in the construction of:

Choose an answer

Galvanometer

Voltmeter

Electric motor

Electric genrator

Commutator

Light year is a unit of:

Choose an answer

Time

Distance

Velocity

Intensity of light

The fourth band is a:

Choose an answer

Silver band

Red band

Gold band

Either A or C

Either A or B

Experiments revealed that the ratio of the stress to the strain is a constant value for

Choose an answer

different material

all materials

a given material

all of them

Acceleration in a body is always produced in the direction of :

Choose an answer

Velocity

Weight

Force

Both B and C

The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:

Choose an answer

0

1

2

3

The distance covered by a body in unit time is called.

Choose an answer

Displacement

speed

Velocity

Both B and C

The displacement coincides with the path of the motion when a body moves is a

Choose an answer

curved line

straight line

may be curved or straight

none of them

The current that flows through the coil of a motor causes:

Choose an answer

Its shaft to revolve

Its brushes to rotate

Motor to move

Its shafts to rotate

None of these

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