Question # 1

If 10 A current passes through 100 mH inductor, then energy stored is.

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100 J

5 J

20 J

Zero

NIBA =

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cθ

θ/c

c²θ

c²/θ

During electrolysis process, density of CuSO₄ solution

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Remains constant

Decreased

Increased

None of these

James chadwick discovered:

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Proton

Positron

Neutron

Electron

For computation of electric flux, the surface area should be.

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Parallel

Flat

Curved

Spherical

In case of reverse biasing, current is flown due to:

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Minority charge carriers

Majority charge carriers

Electrons

Protons

Photodiode is used for wave nature of.

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Light

Thermal radiation

Radi waves

Sound waves

The condition of resonance is:

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XL = 1/2 Xc

X_L = X_c

X_c = 4_x2

None of above

One ohm is equal to

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VC-1

CV-1

AC-1

VA^-1

The typical nuclei are less than:

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10^-16m

10^-14m

10^-12m

10^-10m

Donor impurities are

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Germanium, silicon

Indium, galium

Antimony, arsenic

Diamond, carbon

In extrinsic semiconductors doping is of the order of.

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1 atom to 10⁴

1 atom to 10⁶

1 atom to 10⁸

1 atom to 10³

Unit of Stephen's constant is

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W m K^-2

W m^-2 K^-4

W m K^-4

None

When a conductor moves across a magnetic field an emf is set up this emf is called.

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Variable emf

Constant emf

Back emf

Induced emf

The electric field lines are closer where the field is

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Strong

Weak

Uniform

Variable

Which one of the following physical quantities change with relativistic speed?

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Length

Time

Mass

All of above

The charge number of Ba is.

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197

141

56

85

An electron in H -atom is excited from ground state n=4 , How many spectral lines are possible in this case.

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6

5

4

3

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