Question # 1

Iodine -131 is used for the treatment by

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Bones

Eyes

thyroid glands

Lungs

The electric intensity due to two oppositely charged plates is

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None of these

In glass, molecules are irregularly arranged so it is known as.

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Solid

Liquid

Solid liquid

Gas

If force in the direction of velocity of conductor, then induced current is directed,

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Anti clockwise

Clock wise

At equilibrium

None of above

At high frequency the value of reactance of capacitor will be.

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Small

Zero

Large

Infinite

the current which flows from a point at higher. potential to point at lower potential is called.

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Electric current

Conventional current

Either of these

None of above

The free electrons experience force.

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In direction of -E

In direction of E

Both A and B

All of the above

The unit of conductivity is:

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Ohm^-3m^-1

Ohm m^-1

Both a and b

Ohm m^-1

If F1 and F2 are teh magnetic forces acting on a particle and electron respectively when moving perpendicular to the magnetic field then.

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F1=F2

F1>F2

F1<F2

F1 = 4F2

In current carrying long solenoid the magnetic field produced does not depend upon.

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The radius of solenoid

Number of turns per unit length

Current flowing through solenoid

All of the above

We can never accurately describes all aspects of sbatomic particles simulatanously. It is correct according to:

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Uncertainity Priciple

De-broglie Theory

Einstin Theory

Photo electric effect

In order to increase sensitivity of galvanometer the value of C may be

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Increase

Decrease

Neither increase nor decrease

Remain same

Brightness of screen of CRO controlled by

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Grid

Filament

Anode

Cathode

The electromagnetic spectrum contains

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Radio waves

X-rays

Microwaves

All of these

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

The magnitude of back emf:

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Increases with sped of motor

Decreases with speed of motor

Remains same

None of above

The reverse saturation current in a PN junction diode is only due to:

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Majority carriers

Minoritycarriers

Acceptor ions

Donor ions

If V_rms be the root mean square value of emf then its peak to peak value is given by

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