Question # 1

The special theory of relatively treats the problems involving:

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Inertial frames of reference

Non-inertial frames

Non-accelerated frame

Botha (A) and (C)

Both (B) and (C)

Inertial frame of references are those frame of references which are moving with

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increasing velocity

decreasing velocity

constant velocity

all of them

Weber is a unit of

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magnetic flux

magnetic filed intensity

magnetic induction

magnetic flux density

The conventional current is the name given to current due to flow of

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Positrons

Positive charges

Negative charges

Both A and C

None of these

Brownian motion increases due to

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Increase in size of Brownian particle

Increase in temperature of medium

Increase in density of medium

Increase in viscosity of medium

Coulomb's force between two point charges depends upon

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Magnitude of charges

Distance between them

Medium in which they are located

All of the above

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

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Increases

Decreases

Remains the constant

Either of these

None of these

A body is thrown from a height h with speed u, it hits the ground with speed V

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The value of V is maximum if the body is thrown vertically downward

The value of V is maximum if the body is thrown vertically upwards

The value of V is minimum if the body is thrown horizontally

The value of V does not depend on the direction of which it is thrown

The current through a metallic conductor is due to the motion of

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protons

neutrons

electrons

free electrons

A transistor has:

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One region

Two regions

Three regions

Four regions

None is correct

The doped semi-conductor materials are known as

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intrinsic semi-conductor

extrinsic semi-conductor

either of them

none of them

Which one of the following is an example of resonance

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swing

tuning a radio

microwave oven

all of them

The quantity F x t is called as

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momentum

velocity

acceleration

impulse

Average value of A.C voltage during one cycle is

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1

Zero

Maximum

Variable

The waveform of alternating voltage is a:

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Square

Rectangular

Saw-tooth

Sinusoidal

None of these

When two objects come to common temperature, the body is said to be in:

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Static equilibrium

Dynamic equilibrium

Thermal equilibrium

None of these

The colour sequence in a carbon resistor in red, brown, orange and silver. The resistance of the resistor is

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21 x 10³+ 10%

23 x 10¹+ 10%

21 x 10³+ 5%

12 x 10³+ 5%

The current of 1 ampere is passing through a conductor. The charge passing through it in half a minute is:

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One coulomb

0.5 coulomb

30 coulomb

2 coulombs

None of these

OP-AMP has the following input terminals

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one

two

three

four

In frequency modulation (FM), the carrier waves amplitude

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Remains constant

Increase

Decreases

None of these

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

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125 J

90 J

160 J

85 J

Electron gun consist of

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three anodes

heating cathode

three anodes

three anodes , heating cathode, grid

A heater coil rated at (1000 W - 200 V) is connected to 110 volt line. What will be the power consumed?

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200 W

302.5

250 W

350 W

A resonance curve for RLC series circuit is a plot of frequency versus

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Voltage

Current

Impedance

Reactance

A change in position of a body from its initial position to its final position is known as

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relative motion

displacement

distance

acceleration

The value for systolic blood pressure for a normal healthy person is

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140 torr

80 torr

90 torr

120 torr

Velocity is a

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scalar quantity

vector quantity

constant quantity

none of them

All the valence electrons present in a crystal of silicon are bound in their orbits by

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Ionic bond

covalent bond

Molecular bond

Both (A) and (B)

Both (B) and (C)

The range of projectile is 50 m whenθ is inclined with horizontal at 15°. What is the range whenθ becomes 45°?

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400 m

300 m

200 m

100 m

Which one of the following is correct?

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V_o= 1.414 V_rms

I_ams= 1.414 I_o

VO = 10.70 Vrms

Both a and b

Which waves are used in sonography?

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Microwaves

Infra red waved

Sound waves

Ultrasonic waves

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