Question # 1

If x-component of a vector is -3 N and y-component is 3 N, then angle of resultant vector will x-axis is:

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45°

315°

135°

225°

Computer chips are made from:

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Iron

Silicon

Helium

Stontium

Aluminium

The types of mechanical energy is/are:

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Kinetic energy

Potential energy

Both of these

None of these

Michael Faraday and Joseph Henry belong respectively to

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USA and England

England and France

England and USA

USA and France

None of these

The body of physics involves

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Structure of space and time

Interaction of electromagnetic radiation with matter

Both of them

Chemical Changes

Internal energy is the sum of all the forms of

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K.E

P.E

both of them

none of them

When two protons are brought closer potential energy of both of them:

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Increases

Decreases

Remains same

None of these

Specific heat at constant pressure is greater than the specific heat at constant volume because

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Heat is used up to increase temperature at constant pressure

Heat is used by gas for expansions purposes at constant pressure

Heat is use dup to increase internal energy

The above statement is invalid

Electromagnetic waves transport:

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Energy only

Momentum only

Both A and B are correct

None of is correct

Fluids resist force, This property is called

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Stiffness

Strength

Ductility

Elasticity

A device used to measure the speed of liquid flow is known as

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barometer

speedometer

sphygmomanometer

venture-meter

In super conductors, once the current is established it exists

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1 day

30 days

indefinitely

None of these

An atom in which there is a resultant magnetic field behave like a

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Tiny magnet

Magnetic dipole

No magnet

a and b

The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structures are

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5

7

9

14

Sharks due to their special organs, the "ampulae of lorenzini due to which they can detect the potential difference and can locate their prey very precisely of the order of

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Volt

Milli volt

Micro volt

Nano volt

A completely transparent material will be invisible in vacuum when the refractive index n is

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Unity

More than unity

Less than unity

Equal to 1.33

The fine rulings on a compact disc as a diffraction grating but each line is wide like

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0.01 μm

0.5 μm

0.05 μm

0.6 μm

Charge to mass ratio (e/m) of a charge particle is also called its:

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Specific charge

Specific Force

Gyro-magnetic ratio

Magneto-mechanical ratio

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Initial velocity

Variable velocity

Instantaneous velocity

None of these

The distance between the concentric wavefronts is

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half wavelength

one wavelength

one and a half wavelength

none of them

For a given angle of projection if the time of flight of a projectile is doubled the horizontal range will increases to:

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Four times

Thrice

Once

Twice

The original source of waves is

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Moon

Sun

Wind

None of these

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