Question # 1

Three resistors of resistance 2,3 and 6 ohms are connected in parallel, their equivalent resistance is

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11.0 ohm

1.0 ohm

7.0 ohm

3.0 ohm

An A.C varies as a function of

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Current

Voltage

Time

Charge

A snooker ball moving with velocity V collides head on with another snooker ball of same mass at rest. If the collision is elastic, the velocity of second snooker ball is

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Zero

Infinity

V

2 V

Ethanol (alcohol) as a type of:

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Electric fuel

Bio fuel

Nuclear fuel

None of these

At the top of the trajectory of a projectile the acceleration is

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The maximum

The minimum

Zero

g

The maximum drag force on a falling sphere is 9.8 N, it weight is

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1 N

9.8 N

4.9 N

Cannot be calculated

Compton shift refers to:

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Photon

Meson

Proton

Positron

Both (B) and (D)

The three equation of motions are useful only for

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linear motion with increasing acceleration

line motion with uniform acceleration

linear motion with zero acceleration

linear motion with varying acceleration

Electric field strength is defined as

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Work done on unit charge

Force exerted on unit charge

Distance covered by unit charge

Power exerted by unit charge

None of these

The domains are of macroscopic size of the order of

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centimeters

meters

millimeters

nanomneters

If the objects of different masses move with the same velocity, then it is more difficult to stop the

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lighter of the two

massive of the two

any one of them

both of them

If the water exists from the pipe at the rate 1.5 kgs^-1 at speed of 0.3 ms^-1. If the water strikes a wall normally, find the force on the wall is

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5.53 N

5.03 N

1.35 N

0.45 N

In a half wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be:

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25 Hz

70.7 Hz

50 Hz

100 Hz

The compound having highest %age of oxygen is:

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CH₃COOH

C₂H₅OH

H₂O

CH3COCH₃

Ferromagnetic materials are those in which atoms cooperate with each other

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Weakly

Strongly

Moderately

None of these

A glass plate on which a large number of very fine equidistant parallel lines are drawn is called

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convex lens

thin film

diffraction grating

interferometer

As the Earth spins on its axis, the satellite on the equator always the remains the

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Opposite point

Different points

Same point

None of these

The maximum value of plane angle is

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2π radian

360°

One revolution

All of these

The age of universe is

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5 x 10¹⁷ sec

1.4 x 10¹⁷ sec

3.2 x 10⁷ sec

8.6 x 10⁴ sec

Bulk modulus for diamond is

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250

540

695

714

The brilliance of diamond is

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Entirely due to refractive index

Entirely due to total internal reflection

Partly due to total internal reflection

None of the above

What are the base units of Planks constant h Remember the energy of a photon is given by hf where f element the frequency

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kgms^-1

kgm²s^-1

kgm²s^-2

kgm²s^-3

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