Question # 1

Current provided by a battery is maximum when

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Internal resistance equal to external resistance

Internal resistance is greater than external resistance

Internal resistance is less then external resistance

None of these

A body is floating in a liquid. The up thrust on the body is

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Equal to weight of liquid displaced

Zero

Less than the weight of liquid displaced

Weight of body-weight of liquid displaced

The waves which propagate out in space due to oscillation of electric and magnetic fields are known as

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e.m. waves

mechanical waves

sound waves

water waves

If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be

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20 ms^-2

10 ms^-2

2 ms^-2

1 ms^-2

Particles have the mass smallest of following is

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Electron

Proton

Neutron

Quark

Work done along a closed path in a gravitational field is:

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Maximum

Minimum

Zero

Unity

As compared to the distance measured by an observer on Earth, the distance from Earth to a star measured by an observer in a moving spaceship would seem:

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Smaller

Lerger

Same

Much larger

None of these

Which of the following statements for an object in equilibrium is not true?

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The object must be at rest

The object can be at rest

The object is moving at constant speed

The acceleration of the object is zero

Which of the following theory completely explain the three types of materials

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Bohr model of electron distribution

Rutherford atomic model

Pauli's exclusion principle

energy band theory

When a bicycle is in motion, the frictional forces exerted by the ground are

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In the forward direction on both the wheels

In the backward direction on both the wheels

In the forward direction on the front wheel and the backward direction on the rear wheel

In the backward direction on the front wheel and the forward direction on the rear wheel

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

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diffraction

beat

interference

resonance

The minute hand of a large clock is 3.0 m long. What is its mean angular speed

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1.4 x 10^-4 rad s^-1

1.7 x 10^-3 rad s^-1

5.2 x 10^-3 rad s^-1

1.0 x 10^-1 rad s^-1

Rectangular components are those which are

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Right angle to each other

Making angle of 90^O with each other

Perpendicular to each other

All of these

The rotational analogue of force in linear motion is given by

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Torque

Linear momentum

Moment of inertia

Angular momentum

If two ping pong balls are suspended near each other and a fast stream of air is produced in the space between the balls, then the balls.

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Come closer

Move farther

Remain in original position

Fall down

Wave length of red colour as compared to that of violet colour is:

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Smaller

Longer

Equal

None of these

The relative velocity of a particle moving with velocity V with respect to itself is

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Zero

V

-V

None of these

The resolving power of telescope depends on

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Focal length of eye lens

Focal length of objective lens

Length of the telescope

Diameter of he objective lens

Vector subtractions is made when vectors are just

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Added

First make it negative then add

Only make it negative

None of these

A precise measurement is the one which has

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Absolute uncertainty

Less absolute uncertainty

More absolute uncertainty

None of these

If C and R denote capacity and resistance,the dimensional formula of CR is

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M°L°T^-1

M°L°T°

Not expressible in terms of MLT

When the first condition of equilibrium is satisfied the body will be in

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complete equilibrium

translational equilibrium

rotational equilibrium

all of them

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