Question # 1

Thermodynamics deals with

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Isolated systems

The interactions among various parts of the system

The microscopic behavior of a system

The interactions between system and surrounding

For which position, will the maximum blood pressure in the body have the smallest value.

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Standing up right

Sitting relaed

Lying horizontally

Standing on one's head

Light waves can be polarized because they

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have short wavelength

Have high frequency

Can be reflected

Are transverse

In Compton's effect it was considered that X-rays consist of

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Electrons

Holes

Neutrons

Protons

The characteristic of an image formed by a plane mirror is.

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It is of the same size as the object

It is laterally inverted

It is upright

All of the above

The half life of a radioactive substance depend on.

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Pressure

Temperature

Amount of substance

No external influences

The direction of force on a moving negative charge will be.

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Opposite to that of positive charge

Similar to that of positive charge

At right angel to the positive charge

Parallel to the positive charge

The distribution of electrical charge i an object caused by teh influence of nearby charges is called.

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Electric potential

Electrostatic induction

Electric flux

Electric dipole moment

In the experiment of production of X rays the anti cathode should be bombarded with.

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A particles

Beta particles

Electrons

Protons

The current passing across a p-n junction due to minority charge carriers is called

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Reverse current

Forward current

Leakage current

Both a and b

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 an isobaric process there is no.

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Pressure change

Internal energy change

Heat exchanged

volume change or work done

One weber is equal to.

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N A-1

N m-1 A

N mA-1

N m-1 A-1

In which device is a permanent magnet used

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An electric bell

An electromagnet

A plotting compass

A relay

Oscillatory motion is always under

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An applied force

Restoring force and inertia

A periodic force

A gravitational force

The SI unit of torque is

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kg ms-2

kg m2s-2

kg ms-1

kg m2 s-3

The moment of linear momentum is called.

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Torque

Couple

Impulse

Angular momentum

In any fluid the effect of decrease in pressure with the increase in speed in a horizontal pipe is known as

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Bernoulli's effect

Venturi effect

Torriculli's effect

Shift effect

Which of the following phenomenon occurs when two sound waves of equal amplitude and different frequencies travel through the same region.

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Resonance

Beats

Echo

Doppler's effect

Solar cells are thin sand whishes of

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good conductors

Bad conductors

Semi conductor

Insulators

Which of the following will not acceleation.

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The moon in its orbit

A tennis ball rebounding from ground

A store in free fall

A car in which the engine thrust is equal to the friction

Which quantity is not affected by a magnetic field.

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Moving charge

Stationary charge

Current flowing in a conductor

Charge in magnetic flux

An image formed on the film of camera is

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Real , inverted and diminshed

Virtual, inverted and diminshed

Real upright and diminished

Virtual, upright and idminshed

A application of the phenomenon of polarization is in

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The scattering of light beams

Explaining the blue colour of sky

Identifying chemicals elements

Analysis of mechanical stress

The SI unit of magnetic flux is.

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N A-1

N m-1 A

N m A-1

N m-1 A-1

Artificial polymers are made by a chemical reaction known as.

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Crystallization

Electroplating

Polymerization

Polarization

The value of 'g' is maximum

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Above the earth's surface

Below the earth's surface

At the earth's surface

At the centre of earth

A gas thermometer is more sensitive than a mercury thermometer because the expansion of gas for 1 o/c rise in temperature is.

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Five times as much as mercury

Ten times as much as mercury

Twenty times as much as mercury

Hundred times as much as mercury

The power of convex lens is 10 d. At what distance the 3 times larger image is formed.

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9.6 cm

2.3 cm

13.3 cm

17.6 cm

Which of the following defines P.E. per unit charge.

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Electric current

Charges

Potential

Electric field

The ration of Universal gas constant and Avogadro's number is called.

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Equilibrium constant

Velocity constant

Boitzmann's constant

Gravitational constant

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