Question # 1

The emission of radiations take place in elements, having charge number greater than

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109

82

69

52

A grating with high resolving power can distinguish _______ difference in wavelengths :

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Smaller

Larger

Zero

None of these

The word amorphous means:

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Without any structure

With definite structure

Regular arrangement of molecules

Both (B) and (C)

None of these

An A.C varies as a function of

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Current

Voltage

Time

Charge

Electric field lines emerge from the charges in

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One dimension

Two dimensions

Three dimensions

Four dimensions

None of these

The drag force acting on a spherical droplet of radius 10^-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10^-7m/sec. The units comes out to be:

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10^-16N

10^-14N

10^-12N

10^-10N

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

The neighbours of every molecule in crystalline solids are arranged in

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an irregular manner

a regular manner

any manner

none of them

A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at

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inverting input

non-inverting input

any one of the input terminal

none of them

The number of translation degress of freedom for a diatomic gas is

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2

3

5

6

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

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longitudinal waves

transverse waves

non-mechanical waves

none of them

Bulk modulus for diamond is

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250

540

695

714

How many electrons are in one Coulomb ?

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6.2 × 10^-23

6.2 × 10^-21

1.6 × 10^-19

Zero

The branch of physics which concerned with the ultimate particles of which the universe is composed is known as

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Solid state Physics

Particle Physics

Nuclear Physics

Atomic physics

The materials which are used in selective absorption method to polarize the light are

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chronic substances

organic substances

inorganic substances

diachronic substance

Television signal are converted into light signals by

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Decoder

Transistor

Photodiode

Optical fibre

The product of force and time is called

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Momentum

Force

Impulse

None of these

Which one is numeric quantity?

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Strain

Plane Angle

Impulse

both A and B

In an accelerating system, the apparent weight of the object is

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Equal to its true weight

Not equal to its true weight

Less than its true weight

None of these

Flow rate has SI unit

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m²/s

m/s

m³/s

m³/s²

A thin film is a transparent medium whose thickness is comparable with the wavelength of

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light

sound

any one of them

none of them

Two vectors have unequal magnitudes can their sum be zero ?

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Yes

No

Can be zero

None of these

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