Question # 1

The mechanics, which deals with the objects moving with velocities approaching that of light is called

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Relativistic mechanics

Wave mechanics

Quantum mechanics

Statics

Which quantity is important in stating the entropy of the system

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initial entropy

final entropy

change in entropy

none of them

Such an inductor coil which does not consume energy and is often employed for controlling a.c. without consumption of energy is called

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Choke

impedance

Semi-conductor

None

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

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RMS value

Instantaneous value

Valued average over a cycle

Zero

Both (B) and (C)

Where the streamlines are very close to each other, the pressure will be

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low

zero

high

all of them

The half life of uranium-238 is

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6.2 x 10⁹years

4.5 x 10⁹days

4.5 x 10⁹years

1.3 x 10⁶years

Bernoulli's equation is based upon law of conservation

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Mass

Momentum

Energy

None of these

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:

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KHz

MHz

GHz

BHz

A mass spectrograph sort out

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molecules

atoms

elements

isotopes

One newton is a force that produces an acceleration of 0.5 m/sec²in a body of mass:

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2 kg

3 kg

4 kg

8 kg

Silicon is one of the mot commonly used:

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onductor

Dielectric

Insulator

Semiconduction

Both (B) and (C)

Young's modulus for ice is

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3

14

20

32

The acceleration of a body at some particular instant is called

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Initial acceleration

Variable acceleration

Instantaneous acceleration

None of these

The critical temperature T for is

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1.6 K

2.71 K

3.72 K

2.82 K

When an electron is accelerated through a P.D of one volt it will acquire energy equal to

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One joule

One erg

One electron volt

None of these

Blood vessels under normal conditions are inflate

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Occasionally

Some times

All the times

None of these

The multi-mode step index optical fibre, the central core has

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high refractive index and low density

low refractive index and density

low refractive index and low density

high refractive index and high density

The nature of thermal radiation is smaller to:

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Ultraviolet rays

Light rays

Both of them

None of these

Ordinary light has components of vibration in

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One direction

Different direction

All directions

None of these

The minimum velocity necessary to put a satellite into the orbit is called critical velocity of the value

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6.7 kms^-1

7.9 kms^-1

8.1 kms^-1

9.1 kms^-1

If (a x b) points along positive z-axis,then the vectors a and b must lie in.

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yz-plane

zx-plane

xy-plane

None of the above

The pair of quantities has same dimensions?

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Power, Work

Work, Torque

Impulse, Linear momentum

Both B and C

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