Question # 1

A body of mass 1.0 kg is falling with an acceleration of 10 m/s². Its apparent weight will be (g=10 m/s²)

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1.0 kg wt

2.0 kg wt

0.5 kg wt

Zero

Weber is a unit of

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magnetic flux

magnetic filed intensity

magnetic induction

magnetic flux density

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

Newton published laws of motion in his famous book "principia" in

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1867

1667

1676

1687

When two protons are brought closer potential energy of both of them:

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Increases

Decreases

Remains same

None of these

The motion of molecules in gases is:

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Orderly

Random

Circular

All of these

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

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Voltmeter

Avometer

Ammeter

None of these

Glass is an example of

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crystalline solid

amorphous solid

polymeric solid

none of them

Such oscillations in which the amplitude decreases steadily with time, are called

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resonance

force oscillations

large oscillations

damped oscillations

Viscosity is defined as

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the friction between fluid and its container's walls

the internal friction between two layers of fluid

the resistance to flow a fluid experiences

the extent to which outside factors effect the fluid's flow

At resonance, the impedance of RLC series circuit is

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Maximum

Zero

Minimum

Determinate

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Rays are normal to wave front

Rays may be normal to wave front

Rays are not normal to wave front

There is no relationship between rays and wave fronts

A shortsighted person can see clearly

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Near objects

Far objects

Objects at 25 cm

Objects at infinity

Work is defined as the dot product force and displacement which is a

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Scalar quantity

Vector quantity

Constant quantity

None of these

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 backwards 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.

Two vectors have unequal magnitudes can their sum be zero ?

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Yes

No

Can be zero

None of these

If the direction of r and F are reversed, then

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The magnitude of the torque changes but direction remains unchanged

The magnitude of the torque does not change but direction reverses

The magnitude and direction of the torque change

The magnitude and direction of the torque remain unchanged

The temperature of sun is measured with

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Platinum thermometer

Gas thermometer

Vapour pressure thermometer

Pyrometer

A boat of mass 40 kg os at rest.A dog of mass 4 kg moves in the boat with a velocity of 10 m/s.What is the velocity of boat?

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4 m/s

2 m/s

8 m/s

1 m/s

If a point source of light is placed at the focus of a convex lens the rays coming out of the lens will constitute

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Plane wave fronts

Cylindrical wave fronts

Spherical wave fronts

All of above

A boat which has a speed of 5 km/h in still water crosses a river of width 1 km along the shortest path in 15 minutes.The velocity of the river in km/s is:

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1

3

4

√41

The retarding force of the stream of water on a motor boat moving with a uniform velocity of 30 ms^-1is 5000 N The power of motor boat is

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1.50 kw

15 kw

105 kw

150 kw

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