Question # 1

The graphical representation of ohm's law is

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hyperbola

straight line

ellipse

parabola

A swing has

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one natural frequency

two natural frequencies

three natural frequencies

four natural frequencies

Beta particles are

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hydrogen nuclei

helium nuclei

electrons

photons

In the equation E=mc² value of c is?

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186000 miles per hour

186000 miles per sec

3 X 10⁸m/sec

Both A and C

Both B and C

The curve representing an isothermal process is called

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adiabat

isotherm

fixed temperature

none of them

Current varies with voltage

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Inversely

as square root

Directly

None of these

Ammeter is used to measure

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voltage

resistance

voltage and current

current

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

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zero

very large

very small

infinite

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

Inverter is the name given to:

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NOT gate

OR gate

NOR gate

AND gate

XOR gate

Fog droplets are suspended in air when their weight is balanced by:

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Force of gravity

Upward trust due to air

Surface tension

None of these

The digital modulation is expressed in

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Bytes

Codes

Bits

None of these

The horizontal velocity component in projectile motion is

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Zero

Constant

Maximum

None of these

Of the following quantities, the one that is vector in character is an electric

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Charge

Field

Energy

Potential Difference

The low blood pressure is

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70 - 80 torr

75 - 80 torr

78 - 809 torr

79 - 80 torr

When two light waves travelling in the same direction are out of phase at any point, their resultant amplitude

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increases

decreases

remains unchanged

increases rapidly

Nms^-1 is the unit of

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Impluse

Power

Energy

Work

For an elliptic orbit, the satellite has speed of

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30,0000 kmh^-1

35,000 kmh^-1

37,000 kmh^-1

None of these

The value of solar constant in SI system is

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1340 watt/m²

1340 m²/watt

1340 watt/m

A null vector is defined as zero magnitude and its direction is

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Specific

Arbitary

Undefined

None of these

Two forces 3 N and 2 N are at an angle 0 such that the resultant is R.The first force is now increased to 6 N and the resultant becomes 2R.The value of θ is

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30°

60°

90°

120°

When the speed of a moving body is doubled

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Its P.E. is doubled

Its acceleration is doubled

Its K.E. is doubled

Momentum is doubled

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