Question # 1

A bus and a car moving with the same K.E. are acted upon by the same retarding force then the

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car will stop first

Bus will stop first

Both will stop simultaneously

Both will never stop

In which of the following the loss of energy is less.

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Direct current

Alternating current

Thermoelectricity

Photoelectricity

Drag force between two layers under consideration depends on

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Distance between the layers

Surface area of layers

Relevant velocity between them

All of the above

The branch of medicine which deals with the anatomy physiology and diseases of the eye

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Ophthalmology

Radiology

Cardiology

Andrology

The potential due to which an electron is lifted from gerund state to excited state is.

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Potential gradient

excitation potential

Ionization potential

Potential difference

Amorphous solids are also called.

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Crystalline solids

Glassy solids

Polymeric solids

Polymers

Which of the following causes the deflection of Alpha particles when they re passed through a thin foil.

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Attraction of nucleus

Collision with nuclei

Interactions with electrons

Electrostatic repulsion by the nucleus

Which is the best sound source to produce a pure note.

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Tuning fork

Flute

Drum

Harmonium

When a force of 16 N acts on a mass of 4 kg for a time of 4 s. What is the rate of change of momentum.

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1 kg m s-2

4 kg m s-2

8 kg m s-2

16 kg m s-2

Efficiency of a Carnot engine depends on

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Temperature

Pressure

Volume

The nature of working substance

When a vector is multiplied by a negative number its direction.

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Remains unchanged

Changes by 180 ^o

Becomes horizontal

Vertical to each other

who gave the law of equipartition.

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Maxwell

Carnot

Claussius

Boltzmann

When an unbalanced external force acts on a body for a short interval of time.

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The body will experience an impulse.

The momentum of the body increases

The velocity of the body increase

The body is not effected

A mercury in glass thermometer and thermocouple thermometer are both calibrated using the same fixed point of 0 oC and 100 oc when both temperature are used to measure the temperature of a body the temperature measured on both thermometers will be exactly the same

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For all temperatures between 0 oC and 100 o C only

Only are the fixed points

For all temperatures at all times

When converted to the Kelvin scale

The energy that must be added to separate the nucleus is called.

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Critical energy

Binding energy

Gravitational energy

Electrostatic energy

Which quantity has different units from the other three.

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Density x volume x velocity

Rate of change of momentum

Young's modulus x area

Weight

Mostly widely used types of gas LASER are.

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Neon

Argon ion

Helium

All of these

In case of a convex lens the rays closed to and parallel to the principal axis will converge after refraction by the lens at a point.

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Optical centre

Principal focus

Focal plane

Principal axis

In case of a convex lens, image formed at 2 F is

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Virtual, erect and larger than the object

Real, inverted and large than the object

Real, inverted and same size as the object

Real, inverted and smaller than the object

Maximum detail of an object can be seen by a microscope when the object is illuminated by light of.

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Longer wavelegth

Shorter wavelength

X -rays

Gama rays

Work can be stored in an inductor as.

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Elastic P.E.

Electrical P;E.

Gravitational energy

K.E.

The sum of positive and negative peak values are usually written as.

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rms value

p-p value

Peak value

Instantaneous value

If the gas pressure is increased then its mean free path becomes.

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More

Zero

Infinite

Less

The SI unit of torque is

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kg ms-2

kg m2s-2

kg ms-1

kg m2 s-3

What is the about the electric field inside a metallic sphere.

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It is zero

It varies with the shape of the conductor

It depends on the charge there

It does not charge the metallic sphere

If you float in water with just your nose out the average density of your body must be

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Same as that of water

Greater than that of water

Less than that of water

Zero

A CE amplifier with by passed emitter resistor is an example of.

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Current series feedback

Voltage sires feed back

Current shunt feedback

Voltage shunt feed back

Which of the following is a method of energy transfer.

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Conduction

Wave motion

Radiation

All of these

Conservation of energy means that

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Energy can be destroyed but not created

Energy can be created but not destroyed

energy cannot be created and destroyed

Energy can neither be created nor destroyed

Andrews isothermal helps to messure

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Boiling point

Boyle's temperature

Temperature of inversion

Critical temperature

For maximum range angle of projection of the projectile should be

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45 ^o

90^o

120 ^o

180 ^o

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