Question # 1

The figure 1.007276μ shows the mass of an:

Choose an answer

Atom

Positron

Electron

Neutron

Proton

The rate of decay of radioactive substance

Choose an answer

is constant

decrease exponentially with time

varies inversely as time

decreases linearly with time

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 RLC series circuit, resonance occurs when

Choose an answer

X_{L > Xc}

X_{L < Xc}

X_{L = Xc}

None of these

The study of fluid in motion basically involves law of conservation of:

Choose an answer

Mass

Energy

Change

Both A and C

Both A and B

A condenser of capacity 50μF is charged to 10 V.The energy stored is

Choose an answer

1.25 x 10^-3J

3.75 x 10^-3J

2.5 x 10^-3J

5 x 10^-3J

Viscosity is defined as

Choose an answer

the friction between fluid and its container's walls

the internal friction between two layers of fluid

the resistance to flow a fluid experiences

the extent to which outside factors effect the fluid's flow

A.C. can be measure with the help of

Choose an answer

Nuclear effect

Magnetic effect

Chemical effect

Heating effect

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

Choose an answer

3 N

4 N

5 N

6 N

In a straight current carrying conductor, the direction of magnetic field can be found by

Choose an answer

right hand rule

left hand rule

head to tall rule

none of these

The gavanometer constant of a moving coil galvanometer is given by

Choose an answer

K=BAN/C

K=BN/CA

K=NAC/B

K=C/BAN

A car moves for half of its time at 80 km/h and rest half of time at 40 km/h, The total distance covered is 60 km. What is the average speed of the car?

Choose an answer

60 km/hr

80 km/hr

120 km/hr

180 km/hr

In a semi-conductor material, the total current is

Choose an answer

only the +ve current

only the electronic current

sum of +ve and electronic current

all of them

A typical rocket ejects the burnt gases at speeds over

Choose an answer

400 ms^-1

40000m s^-1

40000 ms^-1

60000 ms^-1

Compton was awarded Nobel prize in physics in

Choose an answer

1921

1923

1925

1927

In a transistor, collector current is controlled by

Choose an answer

Collector voltage

Base current

Collector resistance

All of the above

Tick the correct statement:

Choose an answer

Both the potential and potential difference is scalars

Potential is a scalar but potential difference is a vector

Both are vectors

Potential is vector but potential difference is scalar

None of these

The value of relative permittivity of different dielectrics are

Choose an answer

Equal

Different

Greater than one

Smaller than one

Both B and C

The temperature at which the vibrations become so great that structure of the Crystal breaks up, is called:

Choose an answer

Critical temparature

Temperature of vaporization

Melting point

Both (A) and (C)

Both (A) and (B)

The input resistance of the OP-AMP is the resistance between the

Choose an answer

(-) input and output

(+) input and output

(-) and (+) inputs

between any inputs

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

The consumption of energy by a 1000 watt heter in half an hour is:

Choose an answer

5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

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

A charged particle moving at right angle to the magnetic field will experience

Choose an answer

minimum force

maximum force

zero

moderate force

The special theory of relativity treats problems invoving

Choose an answer

inertial frame of references

accelerating frame of references

both of these

none of these

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Choose an answer

Parallel

Antiparallel

At angle 60°

Perpendicular to each other

The isotope/s of hydrogen is /are:

Choose an answer

Protium

Deuterium

Tritium

Both (A) and (B)

All of these

Battery is charged in motor cars, which is based on

Choose an answer

Chemical effect

Magnetic effect

Electric effect

None

The SI unit of permitivity is

Choose an answer

Nm²C²

N^-1m^-2C²

NmC²

Nm²C^-1

If d is the displacement of the body in time t, then its average velocity will be

Choose an answer

V_av= d x t

V_{av = t/d}

V_{av = d/t}

Which one of the following is an example of resonance

Choose an answer

swing

tuning a radio

microwave oven

all 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