Question # 1

The electrons in one coulomb change is equal to.

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1.6 x 10^-19

2.25 x 10^-19

6.25 x 10^-18

6.25 x 10^-19

The induced emf in a coil is proportional to:

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Magnetic flux through the coil

Rate of change of Magnetic flux through the coil

Area of the coil

Product of magnetic flux flux and area of the coil

In A.C. inductor behaves as

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Capacitor

Resistor

Commutator

Transistor

Photo diode is used for detection of.

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Heat

Magnet

Current

Light

Compton effect proves.

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Wave nature of radiation

Wave nature of particle

Dual nature of particle

Particle nature of radiations

Lenz's law presented in

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1834

1934

1826

1836

Minimum energy needed to escape an electron ofrm metal surface is called:

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Threshold energy

Threshold frequency

Work function

Work ability

The conductor experience force, placed in magnetic above:

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Move towards weaker part of field

Move towards stronger part of field

Remains at rest

Move upwards in space

In D.C. generator, split rings act as.

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Capacitor

Commutator

Resistor

Inductor

After curie temperature.

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Ferromagnetic

Paramagnetic

Magnetic

Diamagnetic

An alternating voltage is given by 20 sin 157 t. Th efrequency of alternating voltage is:

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50 Hz

25Hz

100 Hz

75 Hz

The net charge on a capacitor magnitude of charge of charge

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Infinity

2 q

Q/2

Zero

The highest value reached by the voltage or current in one cycle is called.

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Peak ot peak value

Peak value

Instantaneous value

Root mean square value

Special organs called ampullae of lorenzenite are present in.

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Bats

Cats

Dogs

Sharks

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

The electric field in some region of of space is uniform in magnitude and direction. Which one of the following five statements best desccribes the volume charge density (ρ) , in this region of space?

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ρ = 0

ρ decreases linearly in the direction of the electric field

ρ increases linearly in the direction of the electric field

ρ has a uniform value throughout the region

The output from a full wave rectifier is

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An ac voltage

A dc voltage

Zero

A pulsating unidirectional voltage

The Unit of decay constant.

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Second

(second)-1

m-1

mk

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