Question # 1

An inkjet printer uses in its operation:

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Neutrons only

Mesons only

Positrons and photons

An electric charge

None of these

When the emitter-base junction of a transistor is reverse biased, collector current

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Reverses

Increases

Decreases

Stops

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

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50

100

150

200

250

The speed of a pendulum is measured to be 3.0 s in the inertial reference frame of the pendulum. What is its period measured by an observer moving at a speed of 0.95 c with respect to the pendulum

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2.9 s

3.0 s

6.6 s

9.6 s

To and from motion of a body about its mean position is known as:

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Translatory motion

Vibratory motion

Rotatory motion

None of these

The phase determines the

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displacement

amplitude

frequency

state of motion of vibrating body

A grating with high resolving power can distinguish _______ difference in wavelengths :

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Smaller

Larger

Zero

None of these

At resonance, the phase angle for RLC series resonance circuit equals

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0°

90°

180°

270°

The terms phase difference and path difference are:

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Same

Different

Equal

None of these

Particles have the mass smallest of following is

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Electron

Proton

Neutron

Quark

The general theory of relativity treats problems involving

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inertial frame of references

accelerating frame of references

both of these

none of these

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Equation of continuity

Bernoulli's theorem

Toricelli's theorem

None of these

The difference between 1st ring fringe and 1st dark fringe is measured as

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λD/2d

λD/d

λD/4d

2λD/d

Co-planar forces are those forces which are

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right angle to each other

parallel to each other

antiparallel to each other

acting in a plane

The motion of molecules in gases i:

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Orderly

Random

Circular

All of these

Which of the given elements is a diamagnetic material

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Antimony

Bismuth

Copper

All of these

A component of a vector has its

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Normal value

Effective value

Given direction

b and c

Viscosity of acetone at 30^oC in NSm^-2

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0.198 × 10^-3

0.224 × 10^-3

0.295 × 10^-3

0.301 × 10^-3

The torque acting on a body is the rotational analogue of

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Mass of the body

Linear kinetic energy of the body

Linear velocity of the body

Force in linear motion

Viscosity of plasma at 30^oC in Nsm^-2

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1.6 × 10^-3

1.595 × 10^-3

1.67 × 10^-3

1.69 × 10^-3

For glass-air boundary, the value of the critical angle is

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42°

45°

30°

60°

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