Question # 1

Absolute zero is considered as that temperature at which:

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All liquid become gases

All gases become liquid

Water freezes

None of these

The total energy of spring mass system is

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zero

changing with time

constant

none of them

Resolving power in mth order diffraction for grating is given by:

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R = N/m

R = m/N

R = N x m

None of these

In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them

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Small

Greater

Equal

Sometimes

Acceleration in a body is always produced in the direction of :

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Velocity

Weight

Force

Both B and C

A swing has

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one natural frequency

two natural frequencies

three natural frequencies

four natural frequencies

Most OP-AMP operates with

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+ 6 V supply

+ 10 V supply

+ 12 V supply

+ 24 V supply

Which of the following quantity for particle executing SHM is non-zero at mean position

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Force

Acceleration

Velocity

Displacement

Range of a projectile is R, when the angle of projection is 30° . Then, the value of the other angle of projection for the same range, is

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45°

60°

50°

40°

Work has the dimensions as that of

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Torque

Angular momentum

Linear momentum

Power

The value of current at resonance in series LCR circuit is affected by the value

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R only

C only

L only

R, C and L

The results of spectra obtained by Balmer were expressed in 1896 by:

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Bohr

Rydberg

Planck

Rutherford

Coulomb

The graphical representation of ohm's law is

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hyperbola

straight line

ellipse

parabola

The rate of change of momentum of a molecule is equal to:

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Pressure

Work

Density

Force

The induced current in the loop can be Increased by

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both A and B

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

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constant rate

volume rate

flow rate

steady rate

The electric intensity at infinite distance from the point charge will be

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Infinite

Positive

Zero

Negative

Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in

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1916

1919

1921

1923

Which of the following is scalar quantity?

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Electric potential

Velocity

Momentum

Force

The liquid which conduct current is known as

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heating effect

chemical energy

electrolyte

ohm's law

To designate the voltage as low or 0 by a logic gate, the specified minimum value is:

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0.2 volt

0.8 volt

0 volt

2.0 volt

5.0 volt

A metastable stae:

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Is an excited state

Is that in which excited electron is stable

Is that in which excited electron is usually unstable

Means a time interval of 10^-8second

Both (A) and (C)

Generally a temperature scale is established by

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one fixed point

two fixed point

three fixed point

four fixed point

SHM is type of ______ motion

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Vibratory

Linear

Circular

None

In the stress-strain graph, stress is increased linearly with strain until a point is reached, this point is known as

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plastic limit

plastic deformation

proportional limit

elastic behaviour

The entire wave form of sinusoidal voltage is actually a set of all the:

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Positive maximum value + V_oand negative maximum value -V_o

Posiotive maximum value +V_oand zero

Zero and negative maximum value -V_o

Any of these

None of these

Substances which break just after the elastic limit is reached, are known as

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brittle substances

ductile substances

plastic substances

elastic substances

Pair production take place when energy ofγ-rays photon is

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equal to 1.02 Mev-

greater than 1.02 Mev

less than 1.02 Mev

none of these

Circular motion is an example of motion in:

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One dimension

Two dimensions

Three dimensions

None of these

The earth's potential is taken as

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Negative

Positive

Zero

Infinite

Moment of inertia depends upon:

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Mass

Selection of axis of rotation

Both of them

None of these

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