Question # 1

The internal energy of an ideal gas system is generally the

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translational K.E of molecules

vibrational K.E of molecules

rotational K.E of molecules

all of them

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

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low

zero

high

all of them

Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is:

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20 N

-2 N

18 N

36 N

Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.

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Disc, sphere

sphere, hoop

Thin rod, hoop

Hoop,disc

Pressure exerted by a gas on the walls of its container in due to

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adhesion between the gas molecules and the container

cohesion between the gas molecules and the container

collision between the gas molecules and the container

surface tension of the gas

A capacitor of capacity 1μF is charged to 1 KV. The energy stored in J

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5

0.5

0.005

50

The expression F x t is called impulse if the time 't' is

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zero

very large

very small

infinite

Selenium is:

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An insulator

A conductor

Both A and B

Excellent conductor

None of these

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

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2 R

R

R/2

R/4

0.1 kg mass will be equivalent to the energy

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9 x 10¹⁵J

5 x 10⁸J

6 x 10¹⁶J

9 x 10^-16J

The value of output resistance of OP-AMOP is of the order of

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few ohms

few hundred ohms

several kilo ohms

several mega ohms

Which one of the following is dimensionless:

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Acceleration

Velocity

Density

Angle

The bands below the valence band are

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completely filled and play active part in conduction process

completely filled and plays no part in conduction process

completely filled and play active part in conduction process

not completely filled and play no part in conduction process

Amorphous solids are also called as

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crystalline solids

polymeric solids

glassy solids

any one of them

Improper biasing of a transistor circuit produces

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Heavy loading of emitter current

Distortion in the output signal

Excessive heat at collector terminal

Faulty location of load line

The magnitude of the displacement is a line from initial position to final position which is

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straight

curved

either be curved or straight

none of them

In the formula R = N x m for diffraction grating, N denotes:

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No. of lines/cm

No. of lines/meter

Total number of lines

None of above

Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:

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30°

45°

60°

90°

Resolving power in mth order diffraction for grating is given by:

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R = N/m

R = m/N

R = N x m

None of these

At higher frequency of the alternating current, the capacitive reactance X_c

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Increases

Decreases

Remains the same

Increases only when the voltage increases

A metal road of length 1m is moving at a speed of 1 ms^-1In a direction making angle of 30º with 0.5 Y magnetic field. The emf produced in the rod is:

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0.25 N

0.25 V

2.5 V

2.5 N

25 V

A carnot cycle consists of

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One step

two step

three steps

four steps

Linear momentum is a

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fixed quantity

constant quantity

scalar quantity

vector quantity

A field in which the work done in moving a body along closed path is zero is called

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Nuclear Field

Conservative field

Gravitational field

Non-conservative field

The energy is found from Einstein's mass energy relation is called

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binding energy of electron

binding energy of proton

binding energy of neutron

binding energy of nucleus

Where the streamlines are very far apart from each other, the pressure will be

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low

zero

high

all of them

Lenz's law is the consequence of

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Mass

Energy conservation

Momentum conservation

Charge

The SI unit of electric flux is

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Weber

Nm²C^-1

NmC^-1

Nm^-2C

In an adiabatic expansion, the temperature of the gas

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increases

becomes zero

decreases

decreases rapidly

Converse of pair production is known as

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Compton effect

annihilation of matter

photoelectric effect

none of these

The shortest distance between two points directed from its initial point to final point is called:

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Velocity

Displacement

Speed

Distance

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