Question # 1

The unit of resistivity is

Choose an answer

ohm

ohm-m²

ohm-meter

ohm-m^-1

Transmitting antenna emits

Choose an answer

Magnetic waves

Electric waves

Electromagnetic waves

Sound waves

The force of repulsion between two point charges is F, when these are at a distance 0.1 m apart. Now the point charges are replaced by sphere of radii 5 cm each having the same charge as that of the respective point charges. The distance between their centre is again kept 0.1 m ; then the force of repulsion will

Choose an answer

Increase

Decrease

Remain F

Become 10F/9

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

Choose an answer

how heat is absorbed

how heat extracted

how this conversion takes place

none of them

Which of the following waves are more energetic

Choose an answer

radio waves

infrared waves

ultraviolet

γ-rays

Electric field lines emerge from the charge in:

Choose an answer

One dimension

Two dimensions

Three dimensions

Four dimensions

None of them

Rate of decay is actually described by.

Choose an answer

Half line

Decay constant

Mean life

Total life

None of these

The principle characteristics of an ideal standard are

Choose an answer

Inaccessible and Invariable

Accessible and Invariable

Accessible and Variable

None of these

The transitions of electrons in the hydrogen atom result in the emission of spectral lies in the:

Choose an answer

Ultra red region

Visible region

Ultraviolet region

Any of these

None of these

The curve representing an adiabatic process is called

Choose an answer

isotherm

adiabat

adiable

none of them

A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec²in this case, find radius of the circular path:

Choose an answer

1 m

5 m

10 m

15 m

The period of a satellite when there is critical velocity is

Choose an answer

80 min approx

84 min approx

82 min approx

90 mix approx

On the ground the gravitational force on a satellite is W. What is the gravitational force on the satellite when at a height R/50,where R is the radius of the Earth

Choose an answer

1.02 W

1.00 W

0.98 W

0.96 W

A null vector is defined as zero magnitude and its direction is

Choose an answer

Specific

Arbitary

Undefined

None of these

The range of the projectile means a body covers horizontal distance which is

Choose an answer

Maximum

Minimum

Distance

None of these

Equal charges are given to two spheres of different radii,The potential will

Choose an answer

Be more on the smaller sphere

Be more on the bigger sphere

Be equal on both the sphere

Depend on the nature of the material of the sphere

The mks unit of Mechanical Equivalent of heat is

Choose an answer

Joulex calorie

Joule/ calorie

Calorie x erg

erg/ calorie

Law of conservation of momentum has been verified for the

Choose an answer

Cosmological level

Microscopic level

Submicroscopic level

a and c

Colours seen on oily water surface by the incident white light is due to

Choose an answer

Diffraction

Interference

Refraction

Reflection

The field of a long bar magnet is like a

Choose an answer

Two pole pieces of magnet

Solenoid

Toroid

None of these

When a silicon crystal is doped with a trivalent element, such an extrinsic semi-conductor is called

Choose an answer

p-type semi-conductor

n-type semi-conductor

either of them

none of them

The time rate of change of velocity is called

Choose an answer

Initial velocity

Uniform velocity

Accelerations

None of these

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