Question # 1

Bottom quark carries charge :

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2/3 e

-2/3 e

+1/3 e

-1 /3 e

The photoelectric effect predicts that light is made of

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Photons

Neutrons

Protons

None of these

Electric current produces magnetic field, was suggested by.

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Faraday

Oersted

Henry

Lenz

Charge on an atom is:

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Positive

Negative

Neutral

None of these

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

If both the length and radius of the rod are doubled, then the modulus of elasticity will:

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Increase

Decrease

Remains the same

Doubled

The output from a full wave rectifier is

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An ac voltage

A dc voltage

Zero

A pulsating unidirectional voltage

The magnitude of back emf:

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Increases with sped of motor

Decreases with speed of motor

Remains same

None of above

Marie Curie and Pierre Curie discovered.

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Uranium

Uranium and Radium

Polonium and radium

Radium

Binding energy for deuteron nucleus is given by

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2.8 MeV

2.23 MeV

2.28 MeV

2.25 MeV

The value of Stefan is constant is:

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4.57 x 10^-8 m²k²

5.67 x10^-8 wm^-2k^-4

6.67x 10^-11 wm²k⁴

7.45 x 10^-9 m² wk³

Specific resistance of a material depends upon.

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Length

Area

Temperature

Both A and B

S.I unit of strength of electric field is

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J/C

C/V

V/C

N/C

In pure capacitor A.C. circuit, the current I and charge q are.

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In phase

Out of phase

Parallel to each other

None of above

Energy produced due to fission of uranium atom is:

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500MeV

200MeV

700MeV

750MEV

The galvanometer can be made sensitive by making the factor BAN/C

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Large

Small

Constant

Zero

The combined effect of resistance and reactance is knows as.

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Inductance

Conductance

Resistance

Impedance

A.C. can be converted into D.C. by

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An oscillator

Detector

An amplifier

Rectifier

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