Question # 1

Current is measured in

Choose an answer

volts

watt

ohm

ampere

Ultra-violet rays differ from X-rays in that they

Choose an answer

Cannot be diffracted

Cannot be polarized

Have a lower frequency

Are deviated when they pass through a magnetic field

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

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

Choose an answer

21 x 10³+ 10%

23 x 10¹+ 10%

21 x 10³+ 5%

12 x 10³+ 5%

During the projectile motion, the horizontal component of velocity

Choose an answer

changes with time

remains constant

becomes zero

decreases with time

The work done on the system by the environment is considered as

Choose an answer

positive

negative

zero

any one of them

Self inducede e.m.f. is also called

Choose an answer

Motional e.m.f.

Thermistor

Electrostatic induction

Back e.m.f

When a conductoris moved across a magnetic field:

Choose an answer

Emf induced its similar to that of a battery

Emf induced gives rise to induced current

An emf is induced across its ends

All are correct

None of these

Resistor is a device which convert electric energy to

Choose an answer

Heat energy

Chemical energy

Elastic energy

All of the above

When certain nucleus emits aβ-particles, is mass number:

Choose an answer

Remain same

Increases by one

Decreases by one

Decreases by four

None of these

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

Choose an answer

500°C

900°C

1100°C

1300°C

The process in which energy is dissipated from the oscillating system is known as

Choose an answer

resonance

interference

diffraction

damping

The SI unit of flux density is.

Choose an answer

Tesla

Weber

Gaun

Weber/meter

Max Planck received the Nobel Prize for his discovery of energy quants in:

Choose an answer

1718 AD

1918 AH

1818 AD

1918 AD

None of these

For Protium, the mass defect is:

Choose an answer

Infinite

Zero

Very large

A few grams

None of these

Mass of proton is

Choose an answer

1.67 x 10^-27kg

1.67 x 10^-31kg

1.66 x 10^-34kg

1.67 x 10^-17kg

When an oscillatory motion repeats itself, then this type of motion is called

Choose an answer

vibratory motion

constant motion

fixed motion

periodic motion

The third band of the colour code:

Choose an answer

Gives the number of zeroes

Is decimal multiplier

Gives the resistance tolerance

Gives the third digit

Both (A) and (B)

When a stress changes the shape, it is called the

Choose an answer

compressional stress

tensile stress

shear stress

any one of them

Graphs which are used to illustrate the variation of velocity of an object with time are called

Choose an answer

distance time graphs

speed time graphs

velocity time graphs

acceleration time graphs

The earth's potential is taken as

Choose an answer

Negative

Positive

Zero

Infinite

Which quantity has the same units as impulse

Choose an answer

force

work

linear momentum

acceleration

The current through a metallic conductor is due to the motion of

Choose an answer

protons

neutrons

electrons

free electrons

The amount of energy equivalent to 1 a.m.u is

Choose an answer

9.315 Mev

93.15 Mev

931.5 Mev

2.22 Mev

Internal friction of fluid is called

Choose an answer

Surface tension

Viscosity

Resistance

Cohesive force

The magnitude of induced emf depends upon the:

Choose an answer

Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

The motion of a projectile is

Choose an answer

one dimension

two dimension

three dimension

all of them

Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

Choose an answer

Interference

Diffraction

Polarization

Refraction

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

Choose an answer

125 J

90 J

160 J

85 J

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

Choose an answer

Decreasing from zero to maximum

Increasing from zero to maximum

Decreasing from maximum to zero

Increasing from maximum to zero

Both (A) and (D)

The maximum drag force on a falling sphere is 9.8 N, it weight is

Choose an answer

1 N

9.8 N

4.9 N

Cannot be calculated

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