Question # 1

The solids are classified as

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Polymeric

Amorphous

Crystalline

All of above

In RLC circuit the energy is dissipated in

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R only

R and L

R and C

L and C

When a conductor moves across a magnetic field an emf is set up this emf is called.

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Variable emf

Constant emf

Back emf

Induced emf

Ampere's law is applicable to:

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Circular path

Rectangular path

To any closed path

Nonwe of these

Balmer series lies in

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Visible region

Invisible region

Ultraviolet region

Infrared region

The direction of induced current is always so as to oppose the change which causes the current, this is the statement of

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Lenz's law

Faraday's law

Ampere's law

Coulomb's law

Pulsating output of full wave rectifier can be made smooth by using circuit called.

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Filter

Amplifier

Resistor

Transistor

We can never accurately describes all aspects of sbatomic particles simulatanously. It is correct according to:

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Uncertainity Priciple

De-broglie Theory

Einstin Theory

Photo electric effect

Earth orbital speed is

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10 km/s

20 km/s

30 km/s

40 km/s

The potential difference across depletion region in case of Si is

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0.6 volt

0.9 volt

0.7 volt

0.2 volt

Photo diode is used for detection of.

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Heat

Magnet

Current

Light

The motional emf developed in a conduction depends upon.

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Length

Orientation

Magnetic field

All of the above

The reactance is the ratio of

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V_rms/I_rms

V_rms x I_rms

I_rms/V_rms

V_max x V_rms

A positive charge is moving towards an observer, The direction of magnetic induction will be.

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Toward right

Anti clockwise

Clockwise

Toward left

Flux through any closed surface is:

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1/ε²_∘ times the total charge enclosed in it

ε²_∘ time the total charge enclosed in it

1/ε_∘ ties the total charge enclosed in ti

ε_∘ time the total charge enclosed in it

The electrostatic force between two charges is 42 N, If we place a dielectric of E_y=2.1 between the charges then the force become equal to.

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42 N

88.2 N

20 N

2 N

Which series lies in the ultraviolet region.

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Balmer series

Bracket series

Ptund series

Lyman series

The curie temp for iron is about

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800^oC

740^oC

750^oC

650^oC

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