Question # 1

Evaporation takes place from liquid :

Choose an answer

Everywhere

Above surface only

Below surface only

Middle of liquid

According to SI-Units , internsity of light is measured in.

Choose an answer

meters

second

moles

candela

The energy stored in a dam is:

Choose an answer

Electric energy

Potential energy

Kinetic energy

Thermal energy

Example of bad conductor is:

Choose an answer

Wool

Iron

Graphite

Gold

The energy stored in dam is:

Choose an answer

Potential energy

Kinetic energy

Chemical enegy

Nuclear energy

Which one of the following converts light energy into electrical energy?

Choose an answer

Electric Bulb

Electric generator

Photocell

Electric cell

Decrease in atmospheric pressure predicts:

Choose an answer

Rainy condition

Intense condition

Windy Condition

Pleasant condition

Transfer of heat by actual movement of molecules form hot place to cold place is called:

Choose an answer

Conduction

Convection

Radiation

None

Gravitational pull of earth is called:

Choose an answer

Weight

Mass

^Force

Tension

Density of water is:

Choose an answer

100 kgm^-3

1000 kgm^-3

10 kgm^-3

1 kgm^-3

Plasma is .......... state of matter .

Choose an answer

Molecular

Fourth

Smallest

Nil

For the emission of electrons from the tungsten filament the values of current and voltage are taken as:

Choose an answer

0.1 A and 2V

0.2 A and 4V

0.3A and 6V

0.4A and 8V

Which of the following devices can be used to produce both a transverse and longitudinal waves?

Choose an answer

A string

A ripple tank

A helical spring

A tuning fork

The brain of any computer system is:

Choose an answer

CUP

Monitor

Memory

C.U

What is the power rating of a lamp connector to a 12 V source when it carries 2.5 A:

Choose an answer

4.8W

14.5W

30W

60W

The S.I unit of Spring constant is:

Choose an answer

Nm

N

Nm-1

Ns

If we double the distance between two charges, what will be the change in the force between them?

Choose an answer

Half

Double

One fourth

Four times

The output of a two input NOR gate is 1 when:

Choose an answer

A is 1 and B is 0

A is 0 and B IS 1

Both A and B are 0

Both A and B are 1

One byte is equal to:

Choose an answer

7 bits

5 bits

8 bits

9 bits

When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate:

Choose an answer

The rod and the paper are oppositely charged

The rod acquires a positive charge

The rod and the paper have the same charges

The rod acquires a negative charge

The speed of sound in iron at 25 ^oC is ms^-1

Choose an answer

5950

5900

6950

6940

What is fitted in telephone receiver:

Choose an answer

Electromagnet

Diaphragm

Both a and b

None

Choose an answer

The dimension of viscosity are

Choose an answer

[M2L-2T2]

[M-1LT-1]

[M-1L-1T]

[ML-1T-1]

If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is.

Choose an answer

200 m

2 m

1 m

0.5 m

Angle between ray of light and wave front is

Choose an answer

0 ^o

60 ^o

90 ^o

120 ^o

the angular version of F= ma is

Choose an answer

L = 1w

pi = 1a

l = pi a

f = mv/t

If the stream lines of fluid are forced closer together then.

Choose an answer

Speed of the fluid increases

Speed of the fluid decreases

Pressure of the fluid increases

Speed of the fluid remain same

The difference between tow molar capacities is equal to.

Choose an answer

Plank's constant

General gas equation

Molar gas constant

Boltzmann constant

Einstein's theory gives us the physical picture of how the

Choose an answer

Body moves

Gravity works

Moment of inertia produced

Weightlessness creates

Almost all the raw energy is librated from

Choose an answer

Heat

Earth

Light

All of these

The angle between circumference of a circle and center is

Choose an answer

Dot product of vector with itself is.

Choose an answer

Zero

2 A

A²

A

The dimension of stress is

Choose an answer

[MLT^-1]

[ML^-1T]

[ML^-1T^-1]

[ML^-1T^-2]

When a pot difference of 4 volt is applied across resistance, 10 J of energy is converted Find charge flows

Choose an answer

0.20 C

2.5 C

5.0 C

10.0 C

The fraction change in resistance per Kelvin is known as:

Choose an answer

Temperature coefficient of Resistance

Coefficient of voltage of change

Thermal expansion

All of the above

The value of Rydberg constant is:

Choose an answer

1.0749x10⁷m^-1

1.0974 x 10⁷ m^-1

1.974 x10⁶m^-1

1.0974 x 10^-7 m^-1

The leV =

Choose an answer

1.6x10-19C

1.6x10-11J

1.6x10-19J

1.6x10-11C

Compton effect proves.

Choose an answer

Wave nature of radiation

Wave nature of particle

Dual nature of particle

Particle nature of radiations

The bnding energy for nucleus A is 7.7 Me V and that for nucleus B is 7.8 MeV. Which nucleus has the larger mass?

Choose an answer

Nucleas A

Nucleus B

Less than nucleus

None of these

Electric potential at a distance ''r'' from ''q'' is:

Choose an answer

V_r = 1/54πε_∘q/r₂

Vr=1/4πε_∘²q/r

V_r=1/4πε_∘2q/r

V_r=1/4πε_∘q²/r

e/m=

Choose an answer

v/Br

Br/V

VB/r

Vr/B

The combined effect of resistance and reactance is knows as.

Choose an answer

Inductance

Conductance

Resistance

Impedance

The series in infrared region is:

Choose an answer

Paschen series

Bracket series

Pfund series

All of above