Question # 1

The unit of resistance is:

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Ω

Ωm

Ω^-1m^-1

Ωm^-1

Kx -Xrays are produced due to transition of electron from.

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K to L shell

L to K shell

M to K shell

M to L shell

An expression for gain of an inverting amplifier is

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(R₁R₂)

None of these

Coercive force is used to

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Demagnetize the material

Magnetize the material

Extend it

None of these

When gama rays are emitted, the nuclear mass.

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Decreases by 4 units

Does not change

Increases by 2 units

Increase by 1 unit

The value of Stefan is constant is:

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4.57 x 10^-8 m²k²

5.67 x10^-8 wm^-2k^-4

6.67x 10^-11 wm²k⁴

7.45 x 10^-9 m² wk³

If the north pole of a magnet moves away from a metallic ring

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Clockwise

Anticlockwise

First clockwise and then anticlockwise

None of above

Which is true for both alpha particle and gama rays.

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They cause ionization in air

They can be deflected by electric field

They can be deflected by magnetic field

The y can penetrate a few millimeters of aluminium

The SI unit of decay constant is

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m

m^-1

S^-1

Nm^-1

If the length and number of turns of a solenoid are doubled strength of magnetic field with.

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Be doubled

Become half

Not change

Be four time

A battery is used in

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ohmmeter

Ammeter

Galvanometer

Voltemeter

The mutual inductance between two coils depends upon their

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Size

Core material

Size, core material and separation

Separation

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 circuit of full wave rectification consist of

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Three diodes

Four diodes

Two diodes

One diode

Which one has the least resistance.

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Galvanometer

Ammeter

Ohm meter

Volta meter

Both xenon and caesium each have:

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41 isotopes

36 isotopes

43 isotopes

33 isotopes

Kirchhoff's voltage rule is a way of stating conservation of.

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Mass

Charge

Energy

Momentum

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

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