Question # 1

The unit of Magnetic flux is called.

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weber

weber/m²

NM^-1A^-1

None of above

Albert Einstein got noble prize for service in:

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Pair production

Annihilation of matter theory

Compton effect

Photoelectric effect

The number of neutron present in a nucleus in a given by

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N = A+Z

N = A- z

N = Z - A

N = A X Z

The series in infrared region is:

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Paschen series

Bracket series

Pfund series

All of above

The number of lines per unit area passing perpendicular through an area is called

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Flux

Electric intensity

Both (a) , (b)

None of these

if time constant in RC series circuit is small, then capacitor is charged or discharged.

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Slowly

Rapidly

At constant rate

Intermittently

Domains are existed in

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Ferromagnetic materials

Paramagnetic materials

Semi conductors

Diamagnetic materials

The velocity of an oscillating charge as it moves to and fro along a wire is.

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Changing

Constant

Infinite

zero

A two inputs NAND gat with inputs a and b has an output '0' if.

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B is zero

A is zero

Both A and B are 1

Both A and B are '0'

Compton shift is maximum for scattering angle of photon

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0^o

90^o

180^o

45^o

Cobalt -60 is the source for

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Alpha rays

Gama rays

Beta rays

Neutron

A positron is an anti particle of.

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Proton

Electron

Neutron

Photon

Balmer series lies in

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Visible region

Invisible region

Ultraviolet region

Infrared region

Which one of the following resistance is used to convert a Galvanometer into an ammeter.

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High resistance

Low resistance in series with galvanometer

Shunt

High resistance in series with galvanometer

The self induction emf is some times called.

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Motional emf

Constant emf

Back emf

Variable emf

Boher proposed his atomic model in:

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1910

1911

1912

1913

The unit of Plank's constant 'h' is.

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JC

J/C

JS

J/S

Electric current produces magnetic field, was suggested by.

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Faraday

Oersted

Henry

Lenz

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