Question # 1

Charge on positron is:

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Negative

Positive

Netural

None of these

The Lenz's law is also statement of:

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Law of conservation of mass

Law of conservation of charge

Law of conservation of energy

Law of conservation of momentum

Which is not fundamental logic gate.

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NOT

AND

OR

NAND

Vrms =

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0.7V_∘

0.07V_∘

0.007V_∘

0.75V_∘

Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?

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Young's modulus

Bulk modulus

Modulus of elasticity

None of these

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

At resonance, the behavior of R-L-C series circuit is.

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Resistive

Capacitive

Inductive

Modulative

Which one of the following is correct

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All of above

An in cudutor may store energy in

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Its magnetic field

Its coil

Its electric field

A neighboring circuit

The current induced can be increased by:

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop bay coi of many turns

All of above

During negative half cycle of A.c then p-n junction offers.

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High resistance

Low resistance

No resistance

All of these

The quantity/factor h/m_oc has the dimensions of.

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Length

Time

Mass

Energy

When the medium is insulator the elecrostatic force between the charges is

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Decreased

Zero

Increased

None of above

Hydrogen bomb is an example of.

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Nuclear fission

Nuclear fusion

Chain reaction

Chemical reaction

The value of Rydberg constant is

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1.0974 x 10⁷ m^-1

1.0974 x 10^-7 m^-1

1.0974 x 10⁶ m^-1

1.0974 x 10^-6 m^-1

The Compton effect is associated with

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X-rays

y-rays

Positive rays

ß-rays

Helium-Neon laser discharge tube contains neon

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82%

15%

25%

85%

The dimensions of magnetic flux are

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M¹L^-2T¹A¹

MLT^-2A^-1

ML²T²A^-1

ML²T^-2A^-1

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