Question # 1

1 amu is equal to

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1.0606 x 10^-27 kg

1.66 x 10^-31 kg

1.66 x 10^-34 kg

1.66 x 10^-19 kg

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

Sensitivity of a galvanometer can be increased by

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Decreasing the value of torsional couple

Decreasing number of turns

Decreasing area of plane of coil

Decreasing magnetic field

Resistivity at a given temperature depends upon.

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Area of cross section

Length

Nature of material of conductor

Both length and area

The SI unit of magnetic permeability is.

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WbA-1m-1

Wbm-2

WbmA-1

WbAm-1

For Paschen series, the value of 'n' starts from

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2

4

6

8

If a charged body is moved against the electric field it will gain.

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P.E.

K.E.

Mechanical energy

Electrical potential energy

The energy of the photon of wavelength 500 nm is.

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3.10 eV

2.49 eV

1.77 eV

1.52 eV

If a charge is at rest in a magnetic field then force on charge is

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Zero

Double

One fourth

Four times

In a certain circuit, I_{B = 40 µA,}I_C= 20 mA

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450 amp

0.45 amp

5 m amp

500 amp

For a current carrying solenoid the term 'n' has unit as.

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No unit

m^-1

m^-2

m-3

the core of transformer is laminated so reduce.

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Magnetic loss

Hysteresis loss

Eddy current loss

Electric loss

If a step up transformer were 100% efficient the primary and secondary winging's would have the same.

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Current

Power

Voltage

Direction of winding

The first theory about the structure of an atom was introduced by

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Neil Bohr

Einstein

Compton

Rutherford

The numerical value of Compton wavelength is equal to

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3.43 x 10^-12 m

1.43 x 10^-12m

2.43 x 10^-12m

0.43 x 10^-12m

The output voltage of a rectifier is.

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Smooth

Pulsating

Alternating

Per featly direct

Laser is a beam of light which is

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Monochromatic

Coherent

Unidirectional

All of these

Unit of Stephen's constant is

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W m K^-2

W m^-2 K^-4

W m K^-4

None

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