Question # 1

The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:

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Wien's constant

Stefen's constnat

Planck's constant

Boltzmann's constant

None of these

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

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Greater than

smaller than

Equal to

None of these

If a mass of 10 gm is suspended from a spring of k = 9.8 Nm^-1, then the extension will be:

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1 cm

1 m

10 mm

None of these

Amperean path is a:

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Closed path

Rectangular path

Circular path

Any of above

Broken path

Alfa particles are

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hydrogen nuclei

helium nuclei

electrons

photons

The natural arrangement of colours in the spectrum of white light spectrum is

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VIBGYOR

ROYBGIV

ROYBIGV

BIGROYV

None of these

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

If we increase the distance between two plates of the capacitor, the capacitance will

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Increase

Decrease

Remain same

First increase then decrease

Radioactivity

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is exhibited more by semiconductors in general

in exhibited more by the element when they are coupled

with other radioactive elements by a covalent bond

is an atomic property of radioactive elements

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

Which of the following is an example of a S.H.M?

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motion of a projectile

motion of a train along a circular path

motion of swing

electrons revolving sound the nucleus

Electron volt is the unit of.

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Potential difference

Energy

Resistance

Capacitance

A condenser of capacity 50μF is charged to 10 V.The energy stored is

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1.25 x 10^-3J

3.75 x 10^-3J

2.5 x 10^-3J

5 x 10^-3J

The number of vibrating body at any instant from its equilibrium position is called

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displacement

frequency

amplitude

time period

At the top of the trajectory of a projectile the acceleration is

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The maximum

The minimum

Zero

g

.Depletion region contains:

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Protons

Positive ions

Negative ions

Both (B) and (C)

Both (A) and (C)

The fourth band is a:

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Silver band

Red band

Gold band

Either A or C

Either A or B

Which of the following is not a unit of power:

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J-sec

Watt

N m/sec

Horsepower

In the force applied to parallel to the direction of motion, then the work done is:

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Positive

Negative

Zero

None of these

When a source of light isat very large distance,the shape of wavefront is:

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Spherical

Cylindrical

Plane

None of these

The wave motion set up in any medium depends upon:

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Elasticity

Inertia

Density

All of these

The curve representing an isothermal process is called

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adiabat

isotherm

fixed temperature

none of them

Maximum work is done when force and displacement are

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Parallel

Antiparallel

Perpendicular

Both a and b

The number of different crystals systems based on the geometrical arrangement of their atoms and the resultant geometrical structure are

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5

7

9

14

Neutron was discovered by

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Curie

Roentgen

Chadwick

Rutherford

The SI unit of magnetic induction is

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Gauses

Tesla

Weber

Weber²

Light year is a unit of

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Time

Distance

Velocity

Intensity of light

Si units of time period is

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second

hertz

revolution

vibration/sec

Peak value of alternative current is:

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one of its Instantaneous value

Equal to its RMS value

The same as its peak-to-peak value

Both (B) and (C)

None of these

When a body is performing S.H.M., its acceleration is

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inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

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magnetic flux

magnetic flux density

magnetic induction

magnetic field intensity

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