Question # 1

The units of modulus of elasticity are

Choose an answer

Nm^-2

Nm

ms^-1

Pascal

β-particles are easily deflected by collisions than heavy

Choose an answer

α-particles

β-particles

γ-particles

none of these

A potential barrier of 0.7 V exists across p-n junction made from:

Choose an answer

Germanium

Silicon

Arsenic

Gallium

Indium

Amorphous solids are also more like

Choose an answer

crystalline solids

gases

liquids

any one of them

The nuclei of an element having the same charge number but different mass numbers are called:

Choose an answer

Isobars

Isotopes

Isomers

Isobaric

Isothermal

The example of irreversible process is

Choose an answer

slowly liquification

slowly evaporation

an explosion

all of them

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

Choose an answer

Greater than the speed at which they pass from left to right

Less than the speed at which they pass from left to right

The same speed at which they pass from left to right

Any of above

None of them

At the present time, the main frontiers of fundamental science are

Choose an answer

2

3

4

5

The band above the valence band is called

Choose an answer

high energy band

conduction band

empty band

none of them

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:

Choose an answer

KHz

MHz

GHz

BHz

A bar 1.0 m in length and located along x-axix moves with a speed of 0.75 c with respect to a stationary observer. The length of the bar as measured by the stationary observer is

Choose an answer

1.66 m

1.0 m

0.66 m

2.66 m

Which of the following is not the unit of energy?

Choose an answer

Calorie

Joule

Electron-volt

Watt

The dielectric constant K of an insulator cannot be.

Choose an answer

3

8

6

∞

In compound microscope the focal length of eye piece is

Choose an answer

Large

Small

Same as objective

None of these

The total change in momentum of the isolated two ball system is

Choose an answer

Maximum

Minimum

Zero

None of these

Angle subtended by any side of the eight-sided mirror at the center is

Choose an answer

π/8

π/4

2π/8

2π/4

An un-power and un-guided missile is called a

Choose an answer

rocket

ballistic missile

guided missile

none of them

The focal length of the lens of human eye

Choose an answer

Is fixed

Varies from zero to infinity

Can be increased only

Can be decreased only

The velocity of a body at some particular instant is called

Choose an answer

Initial velocity

Instantaneous velocity

Variable velocity

None of these

Given that grating element = 0.2 x 10^-3cm in case of a diffraction grating. Then number of lines per centimeter will be

Choose an answer

500000

5000

50

5

Angular displacement is a vector quantity for

Choose an answer

Small value of Δθ

Very small value of Δθ

All values of Δθ

None of these

The power of a pump motor is 2 kilowatt.The water raised by the pump per minute to a height of 10 m is nearly

Choose an answer

500 kg

7000 kg

1200 kg

Zero

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