Question # 1

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

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circular

elliptical

cycloid

straight line

The bands below the valence band are

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completely filled and play active part in conduction process

completely filled and plays no part in conduction process

completely filled and play active part in conduction process

not completely filled and play no part in conduction process

When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is

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zero

negative

positive

non-existing

In solids, only following type/s of wave can travel:

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Transverse

Longitudinal

Both A and B

None of them

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

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Momentum

Kinetic energy

Velocity

Total energy

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

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-20°C

6.67°C

5°C

0°C

In reverse-biased p-n junction, the reverse current is due to flow of:

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Minority charge carriers

Majority charge carriers

Free electrons from p to n-region

Holes from n to p-region

all are true except (B)

It is customary represent a current flowing towards the reader by a symbol

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(x)

(+)

(.)

(-)

(÷)

The example of mechanical wave is

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waves in ropes

waves on water surface

waves in air

all of them

magnetic field is a:

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Vector quantity

Scalar quantity

Scalar as well as scalar quantity

Any of (A) or (B)

Neither (A) nor (B)

At ordinary temperature, an increase in temperature increases the conductivity of

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Conductor

Semiconductor

Insulator

Alloy

To get higher magnification we must use

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Simple microscope

A convex lens

A compound microscope

All of these

For an ideal gas system, the internal energy and temperature are

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Directly proportional

Inversely proportional

Neither direct nor inversely proportional

None of these

The ability of an instrument of reveal the minor details of an object under examination is called

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Resolution

Magnification

Resolving power

Dispersion

A simple astronomical telescope consists of

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Two convex lenses

Three convex and one cocave

Two concave lens

None of these

Rectangular components of a vector are those which have angle between them

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30^o

60^o

90^o

0^o

YDS experiment can be used to determine:

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Grating element

Fringe spacing

Wave length of monochromatic light

Frequency of wave light

Between layers of liquid in relative motion, viscosity introduces

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Tangential forces

Radial forces

Intermolecular forces

Cohesive forces

Energy can be obtained form solid waste by

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Direct combustion

Indirect combustion

Permentation

None of these

There will be no change in _______ of light entering glass

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Velocity

Frequency

Direction

Wavelength

The dimension of elastic modulus

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ML^-1T²

MLT²

ML^-1T²

MLT³

The phenomenon of blending of around edges of an obstacle is called:

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Interfarance

Defraction

Polorisation

None of above

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