Question # 1

NIBA =

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cθ

θ/c

c²θ

c²/θ

A photon while passing thorugh a magnetic field are deflected towards:

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North pole

South pole

Are ionized

None of these

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

Torque is produced in a current carrying coil when it is placed in a

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Magnetic field

Electric field

Gravitational field

Nuclear field

The unit of magnetic induction B is

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Coulomb

Ampere

Coulomb/ampere

Weber/m²

The vector sum of electric force and magnetic force is called:

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Deflecting force

Lorentz force

Newton force

Faraday's force

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

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No unit

m^-1

m^-2

m-3

If an electron is prijected in a magnetic field with velocity V, it will experience a force

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A charged particle enters in a strong magnetic field its K.E.

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Remain constant

Increases

Decreases

Increases then decreases

The field is strong and uniform.

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Inside the solenoid

Surrounding of solenoid externally

Perpendicular to solenoid

All of above

A moving charge is surrounded by:

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2 Fields

3 Fields

4 Fields

None of these

The torque in the coil can be increased by increasing:

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No. of turns

Current and magnetic field

Area of coil

All of the above

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None of the above

The function of three anodes a C.R.O is

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To accelerate electrons only

To focus the electrons only

To control the brightness of spot on screen

To accelerate and focus the electrons

The e/m of a neutron is

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Less than electron

The same as electron

Zero

Greater than election

The unit of magnetic induction is:

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Tesla

Weber

Weber metre

NAm^-1

A device used for detection of current is called.

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Inductor

Voltmeter

Capacitor

Galvanometer

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