Question # 1

If two bodes are under a collision that is not perfectly elastic then.

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K.E. is conserved but momentum is not

Momentum is conserved but K.E. is not

Neither K.E. nor momentum is conserved

Both K.E. and momentum are conserved

The ability's of convex lens to produce convergence in a parallel beam is called its.

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Magnification

Focal length

Power

Strength

When all the systems taking part in a process are included, the entropy.

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Decreases

Either remains constant of increases

Either remains constant or decreases

Remains constnat

A heat engine with 100% efficiency would have to

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Do no work

Be at a uniform temperature

Use no heat

Discharge at 0^oC

The speed of bodies exceeding the speed of sound is called.

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Superesonic

Ultrasonic

Infrasonic

Super fast

A water wave is an example of

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Electromagnetic wave

Longitudinal wave

Transverse wave

Reverberation

Which type of oscillations produce resoncance.

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Free

Forced

Damped

All of these

If the K.E. of a body becomes 4 times of its initial value, the new momentum will be

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half

Same

Double

4 times

Materials that experience a force from stronger to weaker regions of magnetic field are called.

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Non magnetic

Paramagnetic

Ferromagnetic

Diamagnetic

The force experienced by a unit positive charge at that point placed in an magnetic field is known as.

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Electric field intensity

Electric flux

Electric potential

Electric dipole

The SI unit of current gain is.

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Ampere

Ampere metre

Ampere volt

It has no unit

In heavy elements of the periodic table the number of neutrons than protons are.

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Lesser

Greater

Equal

Undetermined

The point midway between the lens surface on its participial axis

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Optical centre

Principal focus

Focal plane

Focal length

The value of critical angle of glass is

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45^o

42^o

48^o

52^o

Which of the following is not true.

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Velocity can be nagative

Velocity is a scalar

Speed is a vector

Speed can be negative

operation of a LASER depends upon

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Spontaneous emission of radiation

The existence emission of radiation

The existence of atoms in normal state

The existence of atoms in metastable state

Michelson used the equation to determine the speed of light.

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c = 4 fd

c = 8fd

c =12 fd

c = 18 fd

The kinetic molecular model of matter describe matter an being made up of molecules in continuous.

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Vibratory motion

Random motion

rotatory motion

Linear motion

The half life of a radioactive element depends upon.

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Temperature

pressure

nature of element

quantity of the element

Which of the following quantity in analogous to temperature in electricity.

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Charge

Resistance

Inductances

Potential

Which type of microscope was the first to be developed.

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Optical microscope

Digital microscope

Electron microscope

All were developed at the same time

What can be used as the unit of envery.

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N m-1

V A

W.s

V C-1

At what speed the mass of a body will be doubled.

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0.67 C

0.77 C

0.87 C

0.97 C

Wave length of a LASER can be sued as a standard of.

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Angle

Time

Length

Temperature

Birds planes and boats are streamlined to reduce

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Turbulence

Thrust

Drag

Lift

Which circuit elements has two stable states and can be used to store information.

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Flip flop or latch

Logic gate

Oscillator

Amplifier

The path of electron in Rutherford atomic model according to classical theory a.

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Parabolic

Straight line

Spiral

Circular

The sensitiveness of a moving soil galvanometer can be increased by

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Decreasing the number of turns of the coil

Decreasing the area of the coil

Increasing the couple per unit twist of the suspension

Increasing the magnetic flux

Charge to mass ration of an electron is determined by using the relation.

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e/m = B/rv

e/m = r/vB

e/m = V/Br

e/m = v/r

Which is the health care profession concerned with eyes as well as vision visual system and vision information processing in humans.

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Optometry

Ophthalmology

Telemetry

Psychology

The rate of change of momentum of a body falling under gravity is equal to its.

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P.E.

K.E

Weight

Density

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