Question # 1

Einstein's theory about gravity if better than Newton's because it gave explanation of:

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Inverse square law

Bending of light

Both A and B

None of above

An object moving through a fluid experiences a retarding force called a

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frictional force

terminal force

opposing force

drag force

In a transistor, the central region is called

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collector

emitter

base

none of them

The unit of viscosity is SI system is:

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Kg^-1m sec^-1

Kgm^-1 sec^-1

Kg^-1m^-1 sec

None of these

Current is measured in

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volts

watt

ohm

ampere

When a body is vibrating, the displacement from mean position

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Increases with time

Decreases with time

Changes with time

None of these

The critical temperature of aluminium is

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1.18 K

4.2 K

3.72 K

7.2 K

Bodies failing freely under gravity provide good example of motion under

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non-uniform acceleration

uniform acceleration

variable acceleration

increasing acceleration

The absolute temperature for an ideal gas is

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directly proportional to the rotational K.E of gas molecules

directly proportional to the vibrational K.E of gas molecules

directly proportional to the average translational K.E.of gas molecules

directly proportional to the P.E. of gas molecules

The law of conservation of energy gives us

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equation of continuity

Bernoulli's theorem

both of them

none of them

One KWh is equal to:

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3.6 x 10²J

3.6 KJ

3.6 x 10¹KJ

3.6 MJ

When θ = 0 in relation d sinθ = λ, the path difference between the rays coming out from the slits of the grating will be zero. So the image in this directions is

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Dark

Bright

Non image formed

None of these

Polymers have naturally combinations like with

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Oxygen

Sulphuric

Hydrocarbons

Oxygen and carbons

Two bodies of mass 1 kg and 2kg have equal momentum.Then the ratio of their kinetic energies is

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2 : 1

3 : 1

1 : 3

1 : 1

Which of the following is not measured in units of energy

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Couple (angle turned through)

Moment of inertia (angular velocity)²

Force (distance)

Force (time)

Which of the following frequency ranges includes most of the electromagnetic waves emitted by the ultra - violet tubes used in a sun bed?

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5 x 10⁵ to 5 x 10⁸ Hz

5 x 10⁸ to 5 x 10¹¹ Hz

5 x 10¹¹ to 5 x 10¹⁴ Hz

5 x 10¹⁴ to 5 x 10¹⁷ Hz

The distance between the centres of two consecutive bright fringes (or dark fringes) is called

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wavelength

fringe width

amplitude

path difference

The rate of change of angular momentum is

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The applied force

The moment of inertia

The applied torque

Impulse

When satellite is moving in a circle, it has an aceleration

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mV²/r

ωr/V

V²/r

ωV/r

In young s interference experiment one slit is covered with a cellophane paper which absorbs half the intensity then

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No fringes are observed

All fringes will be darks

bright fringes will be less bright and dark will be less dark

Bright fringes will be brighter and dark fringes will be darks

In CGS system the units of dynamic viscosity are

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Nsm^-2

Poise

Nm^-2

None of these

The image formed after objective lens of an astronomical telescope is

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Inverted

Diminished

Real

All of these

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