Question # 1

The third band of the colour code:

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Gives the number of zeroes

Is decimal multiplier

Gives the resistance tolerance

Gives the third digit

Both (A) and (B)

When angular acceleration is positive, the body rotates:

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Slower

Slowest

Faster

None of these

Momentum is a parameter associated with

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wave motion

particle motion

neither wave nor particle motion

none of these

Every crystalline solid has

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definite melting point

different melting points

may or may not be definite

none of them

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

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remains the same

decreases

increases

none of them

Majority charge carriers in the p-region of p-n junction are:

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electrons

positrons

Holes

Neutrons

None of these

10⁶electrons are moving through a wire per second, the current developed is

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1.6 x 10^-19

1 A

1.6 x 10^-15A

10⁶A

According to kinetic theory of gases, molecules of a gas behave like

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Inelastic spheres

Perfectly elastic rigid sphere

Perfectly elastic non-rigid spheres

Inelastic non-rigid spheres

Radioactivity

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is exhibited more by semiconductors in general

in exhibited more by the element when they are coupled

with other radioactive elements by a covalent bond

is an atomic property of radioactive elements

As the light shines on the metal surface, the electrons are ejected

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slowly

instantaneously

either of these

none of these

Gaussian surface is always:

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Rectangular

Spherical

Cylindrical

Box shape

Any of these

1 torr = ______

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1.20 Nm^-2

1.38 Nm^-2

1.33 Nm^-2

1.31 Nm^-2

The modulus of elasticity of a liquid is:

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Zero

1

Infinity

A value not one of those mentioned above

Reduce the given number up to three significant figures 64.6546

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64.6

64.7

64.66

64.65

The power loss can also take place due to

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Information received can be inaccurate due to dispersion

Light signal may not be perfectly monochromatic

Signal accuracy may be affected by deflective source

All of these

The ballistic missiles are useful only for

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long ranges

short ranges

medium ranges

none of them

A 1500 kg car has its velocity reduced from 20 ms^-1to 15ms^-1in 3.0 S. How large was the average retarding force

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-4.5 KN

-2.5 KN

-3.7 KN

-4.3 KN

For maximum linear distance of travel, a projectile must be fired at an angle of

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0°

45°

90°

60°

If the velocity of a body becomes double and mass becomes half then its K.E

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Becomes double

Becomes four times

Is halved

Becomes eight times

A human eye can detect the electromagnetic radiations of the type:

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Infrared radiations

For- infrared radiations

X-rays radiations

Red radiations

Which light travels faster in optical fibres?

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visible light

ultraviolet

infra-red

any one of them

A lift os descending at a constant speed V. A passenger in the lift drops a coin.The acceleration of the coin towards the floor will be

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Zero

g

-g

V + g

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