Question # 1

The types of quacks are.

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2

3

4

6

The drift velocity is of order:

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10^-13m/s

10³ m/s

10^-3m/s

10^-4m/s

If both the magnitude of charges and distance between them is doubled, then coulomb's force will be.

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Doubled

Hlaf

Remain same

One fourth

Thermosouple is an arrangement of two different metals:

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Two convert heat energy into electrical energy

To produce more heat

To convert heat energy into chemical energy

To convert electrical energy into heat energy

Thermistor with high - ve temperature coefficient are very accurate for measuring low temperature especially near is.

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10 kelvin

70 kelvin

200 kelvin

35 kelvin

A soft iron cylinder is placed inside coil galvanometer to:

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Make field circular and strong

Make field radial and weak

Make field radial and strong

All of above

The most refined form of matter is:

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Smoke

Light

Ice

Fog

When a coil is moved in a uniform magnetic field, an induced emf is produced due of change in

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Flux density

Electric flux

Magnetic flux

Magnetic field strength

Absorbed Dose 'D' is defined as

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m/E

E/C

C/m

E/m

In a pure inductive A.C. circuit the current.

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Lags behind voltage by 90 ^o

Leads the voltage by 90 ^o

In phase with voltage

Leads the voltage by 270 ^o

Which series lies in the ultraviolet region.

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Balmer series

Bracket series

Ptund series

Lyman series

Electric field intensity at a point is defined by the relation.

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E= q/F

E = F/q

E = qF

E = F/q2

A battery move a charge of 40 C around a circuit at constant rate in 20 Sec. The current will be.

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2 A

0.5 A

80 A

800 A

Reflecting mirrors in laser is used to

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Further stimulation

For producing more energetic lasers

Both (a) and (b)

None of these

Special organs called ampullae of lorenzenite are present in.

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Bats

Cats

Dogs

Sharks

The first theory about the structure of an atom was introduced by

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Neil Bohr

Einstein

Compton

Rutherford

Which is the most refined form of matter.

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Smoke

Fog

Light

Electron

In Millikan's oil drop experiment a charged particle of mass 'm' is in equilibrium in an will

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Zero

g/2

g

2g

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