Question # 1

When ever the path difference between the waves is integral multiple of half the wavelength, interference will be

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Constructive

Destructive

(-)ve

(+) ve

the locus of all pint in the same wave of vibration is called.

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Wave front

Diffraction

Interference

Polarization

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

The difference between tow molar capacities is equal to.

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Plank's constant

General gas equation

Molar gas constant

Boltzmann constant

The magnitude of A will be

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Zero

A²

1

A

If the pressure of a gas is doubled, then speed of sound is.

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Doubled

Become half

Not affected

Increases by four times

When the projectile reaches the highest point of trajectory, the vertical component of velocity becomes.

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Small

Zero

Maximum

Vi cos

A quantity which indicates the state and direction of a vibrating body is known as

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Time period

Amplitude

Phase

Frequency

Which one of the following force cannot do any work on the particle on which it acts.

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Fractional force

Gravitational force

Electrostatic force

Centripetal force

The mass of an object is quantitative measure 0 its

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Momentum

Acceleration

Inertia

Energy

Frequency 'f' and time period 'T' are related as

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The SI unit for measuring plane angle is

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Streadian

Radian

Both a and B

None of these

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

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Doubled

1/4 original

1/2 of original

Unchanged

Angular momentum has the same unit as

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Impulse x distance

Power x time

Linear x time

work x frequency

In reversible process the entropy of system.

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Remain constant

Decrease

Increase

Becomes zero

One revolution is equal to.

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90^o

180^o

360^o

270^o

Metre is the basics unit of

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Mass

Force

Velocity

Length

The law of conservation of energy gives us

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Equation of continuity

Stock's law

Bernoulli's equation

Viscosity

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