Question # 1

A ten ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

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1310 W

670 W

810 W

1210 W

Maximum work is done when force and displacement are

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Parallel

Antiparallel

Perpendicular

Both a and b

Work done along a closed path in a gravitational field is:

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Maximum

Minimum

Zero

Unity

A simple pendulum consists of a

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small light bob

small heavy bob

big light bob

big heavy bob

Which type of wave can be set up in solids

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longitudinal waves

transverse waves

both of them

none of them

The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are

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3, 15

4, 14

5, 13

6, 12

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

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Voltage

Current

Impedance

Reactance

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

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3

24

126

200

The expression for restoring force is

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F=ma

F=kx

F= -kx

Kx=ma

Density is defined as:

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Mass per volume

Volume per mass

Mass X volume

Mass per length

Ultra-violet rays differ from X-rays in that they

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Cannot be diffracted

Cannot be polarized

Have a lower frequency

Are deviated when they pass through a magnetic field

Rutherford performed an experiment on nuclear reactions in:

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1718 A.D

1818 A.D

1918 A.D

2001 A.D.

1701 A.D.

To sources are said to be coherent if they have:

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Same amplitude

Same wavelength

Definite phase relation with each other

None of them

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

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Velocity

Displacement

Speed

Distance

The root mean square voltage for alternating current is

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All of these

In an adiabatic expansion, the temperature of the gas

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increases

becomes zero

decreases

decreases rapidly

The time taken to complete one vibration is called:

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Frequency

Amplitude

Time

Time period

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

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37.5 km/h

10 km/h

42 km/h

40 km/h

Maximum height of a bullet when fixed at 30 with horizontal is 11 m. Then height when it is fired at 60° is

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22 m

6 m

33 m

7.8 m

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

Which branch of physics deals with the structure and properties of solids

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Atomic Physics

Plasma Physics

Molecular Physics

Solid state physics

According to Stoke's law, drag force depends on

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Initial velocity

Final velocity

Terminal velocity

Instantaneous velocity

Amount of heat required to raise the temperature of a body through 1 K is called its

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Specific heat

Water equivalent

Thermal capacity

Entropy

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

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108 g

10.8 g

0.8 g

108/0.8 g

Examples of moderators used in a fission reactor is/are:

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Water

Heavy water

Carbon

Hydrocarbon

All of these

The electric field intensity at a point due to a point charge

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Falls off inversely as the distance

Falls off inversely as the square of distance

Remains unchanged with distance

Increase directly as square of distance

All trigonometric functions (since, cosine tangent etc. ) are positive in:

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1st Quadrant

2nd Quadrant

3rd Quadrant

4th Quadrant

In the doping process, the ratio of the doping atoms to the semi conductor atom is

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1 to 10

1 to 10³

1 to 10⁶

1 to 10⁹

Physics details with the study of:

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Matter

Energy

Both of them

Human body

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

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0

1

0.5

-1

The motion in a plane is the motion in

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one dimension

two dimension

three dimension

four dimension

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