Question # 1

The molecules or ions in a crystalline solids are

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static

not static

randomly moving

all of them

The waveform of alternating voltage is a:

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Square

Rectangular

Saw-tooth

Sinusoidal

None of these

The volume of universal gas constant R is:

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8.314 J/K mole K

8314 J/K mole K

8.314 J/mole K

None of these

Which one of the least multiple:

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Pico

Femto

Nano

Atto

A typical four stroke petrol engine undergoes how many successive processes in each cycle

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one

two

three

four

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

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short range order

long range order

both of them

none of them

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

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Increasing by a factor of 2

Decreasing by a factor of 2

Decreasing by a factor of 4

Unchanged

As the current flow through the wire:

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It generates heat in the wire

It produces sound in the wire

Resistance of the wire decreases

Voltage across the ends is increased

None of these

The basic circuit element in A.C. circuits are:

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Resistor and capacitor

Resistor and Inductor

Capacitor only

Both (B) and (C)

None of these

The change of magnetic flux through a circuit will produce

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Magnetic Field

Electric Field

emf

a.c

Absolute temperature can be calculated by

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Means squares velocity

Motion of the molecule

Both A and B

None of these

A body of mass m is falling downward in a viscous medium with terminal velocity v net force on the body is

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mg

mg-6πηrv

6πηrv-mg

Zero

A line which represents the direction of travel of a wave is known as

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Wave front

Locus

Ray of light

Either b and c

The stress which increase the length in one dimension only is called

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length stress

only have compressive stress

Have both tensile and compression stress

None of them

One electron volt is equal to

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1.6 × 10^-19 C

1.6 × 10^-16 J

1.6 × 10^-19 J

1.6 × 10^-27 J

The fibre core has constant refractive index such as

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1.48

1.5

1.52

1.56

The distance to the nearest galaxy is

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10²⁰ m

10²⁹ m

10³⁰ m

10³¹ m

The angle between rectangular components of a vector is

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0°

60°

90°

120°

Which of the following lists of physical quantities consists only of vectors:

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Time,temperature,velocity

Force,volume,momentum

Velocity,acceleration,mass

Force,acceleration,velocity

The range of the projectile means a body covers horizontal distance which is

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maximum

Minimum

Distance

None of these

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One angshom is equal to?

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10^-8cm

10^-6m

10^-10nm

10^-8nm

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