Question # 1

The percentage of available heat energy converted into work by a petrol engine is roughly

Choose an answer

35 %

40 %

35 to 40 %

25 %

The natural arrangement of colours in the spectrum of white light spectrum is

Choose an answer

VIBGYOR

ROYBGIV

ROYBIGV

BIGROYV

None of these

The relation between the charge Q of a parallel plate capacitor and the P.D between its plates is

Choose an answer

Q=V/C

Q=C/V

Q=1/2CV

Q=CV

The vertical component of velocity of a projectile during its motion is minimum

Choose an answer

at the time of projection

at the highest point

just before hitting the plane of projection

all of them

The number of vibration in two seconds can be expressed as

______ of frequency of vibration is f:

Choose an answer

f

2 f

3 f

1/2 f

In a building, there are 15 bulbs of 40 watts, 5 bulbs of 100 watts, 5 fans of 80 watts and a heater of 1 kilowatt. The voltage of the electric main is 220 volts. The minimum efficiency of the main fuse of the building will be

Choose an answer

0.4 A

11.4 A

9.8 A

10.6 A

Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called

Choose an answer

tiny regions

domains

vectors

none of them

Amplitude in SHM is equivalent to ______ in circular motion

Choose an answer

Diameter

Radius

Circumference

None of these

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is

Choose an answer

120 x 10.8 N

180 N

720 N

360 N

In a capacitive circuit

Choose an answer

Current leads voltage by phase ofπ/2

Voltage leads current by phase ofπ/2

Current and voltage are in same phase

Sometime current and sometime voltage leads

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Choose an answer

decrease

increase

same

none of these

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates,Then quantity that remains unchanged is

Choose an answer

Charge Q

Potential V

Capacity C

Energy U

Because of large mass when 𝑎 −paricle enters the atom or molecule it:

Choose an answer

Moves in zigzag path

Moves along straight line

Moves along circular path

None of these

The transition of from solid to liquid is actually from:

Choose an answer

Order to disorder

Disorder to order

Order to order

Disorder to disorder

The high blood pressure is known as

Choose an answer

Diastolic

Systolic

High blood pressure

None of these

Linear momentum is a

Choose an answer

fixed quantity

constant quantity

scalar quantity

vector quantity

Correction factor can be applied to

Choose an answer

Personal error

Systematic error

Random error

All

Kilowatt-hour is a unit of

Choose an answer

Power

Energy

Electrical Energy

None of these

Satellites are objects that orbit around the

Choose an answer

Sun

Planet

Earth

None of these

In a cubic crystal, all the sides meet at:

Choose an answer

60°

90°

109°

30°

10°

The astronomical telescope consists of objective and eye piece.The focal length of he objective is

Choose an answer

Equal to that of the eye piece

Greater than that of eye piece

Shorter than that of eye piece

Five times shorter than that of the eye piece

How are X-rays diffracted by crystals in X-rays crystallography?

Choose an answer

they bounce off the nucleus

they are diffracted whey they pass from between them acting as a slit

they are diffracted by the electron clouds in the atoms

they hit the side the nucleus and change direction and thus are diffracted

More Classes

Other Links

Physics General Science Test Medium Mode 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