Question # 1

On hot days cold air from sea began to move towards land:

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Sea breeze

Land breeze

Both A and B

None of these

The value of g on moon's surface is 1.6 ms^-2. what will be the weight of a 100 kg body on the surface of the moon?

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100 N

160 N

1000 N

1600 N

Density is a ratio of mass to:

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Area

Volume

Length

Mass

__________ is a major source of heat:

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Mercury

Sun

Fire

Moon

The unit of co-efficient of linear expansion :

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K

K^-1

Jkg^-1 K^-1

None of these

In screw gauge if zero of circular scale is behind the index line is called error.

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Positive

Zero

Negative

None of these

Air and water is conductor:

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Poor

Good

Excellent

None of these

Mass per unit volume is:

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Velocity

Work

Density

None

Standards, of physical quantities were established in .

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1910

1020

1950

1960

Which of the solid does not possess the fixed shape and volume?

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Stone

Metal spoon

Pencil

Amorphous solid

If a body does work at the rate of 1 Js^-1then its power will be:

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KW

1 MW

1 W

None of these

The instrument which is used to display the magnitude of changing electric current is called:

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Evacuated tube

Cathode rays oscilloscope

Television tube

Picture tube

Hard disk is made of:

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Aluminium

Copper

Iron

Plastic

When light passes through a prism it deviates from its original path due to:

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Reflection

Diffraction

Interference

Refraction

The value of acceleration is simple harmonic motion at mean position is:

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Maximum

Zero

10 N

Both a and b

1 nano farad is equal to:

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1 x 10^-12 F

1 x 10⁹F

1 x 10^-9F

1 x 10^-6F

The unit of spring constant is:

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m

kg

Nm²

Nm^-1

NOT gate is also called:

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Converter

Inverter

Transmitter

Receiver

The ray of the light after reflection from concave mirror passes through:

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Centre

Principal focus

Pole

None of these

The difference between the loudness of faintest audible sound and loudness of another sound is called:

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Pitch of sound

Quality of sound

Sound level

Intensity of sound

The value of K in SI unit is:

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9X10²⁰ Nm²C²

8X10⁹Nm²C²

9X10⁹Nm²C²

10X10^-9 Nm²C^-2

An object gains excess negative charge after being rubbed against another object, which is:

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Neutral

Negatively charged

Charged

Either, a,b,and c

Sound waves are

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Electromagnetic waves

Transverse waves

Compressional waves

Matter waves

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

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Body moves

Gravity works

Moment of inertia produced

Weightlessness creates

The acceleration of a projectile along x axis is.

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Zero

Increase

Decrease

Equal to 'g'

Cloud formation in atmosphere is an example of.

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Isothermal process

Isochoric process

Adiabatic process

Isobaric process

The rate of change of angular velocity is called

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Angular velocity

Angular acceleration

Angular displacement

Angular speed

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

The device used to study the spectra from different sources of light is

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Telescope

Optical fibre

Spectrometer

Microscope

The value of of 'g' at the centre of the earth is

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Infinite

2 g

3 g

zero

The trajectory of a projectile is.

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Circle

Parabola

Hyperbola

Straight line

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

A two inputs NAND gat with inputs a and b has an output '0' if.

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B is zero

A is zero

Both A and B are 1

Both A and B are '0'

Electric power:

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Vx1

V²x1

V/1

V/1²

The force on a charge particle moving parallel to magnetic field is:

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Maximum

Minimum

Zero

None of these

There are different crystal systems. The number of these crystal system is.

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3

4

5

7

Shear modulus is expressed as:

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G = tanθ/F/A

F/A/tanθ

F/tanθ

tanθ/A

Which particle has larger range in air.

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Alpha rays

Gama rays

Beta rays

Neutron

Which is not characteristic of Laser.

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Monochromatic

Coherent

Intense

Multi direction

If the length of solenoid is doubled but N same, B inside the solenoid becomes.

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Half

Doubled

One fourth

Four times

Platinum wire becomes yellow at a temperature of.

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900^oC

1300^oC

1600^oC

500^oC

Specific resistance of a material depends upon.

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Length

Area

Temperature

Both A and B

The average gap for Germanium at 0K is

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1.12 ev

0.02 ev

6.72 ev

7.2 ev