Question # 1

Balmer series lies in

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Visible region

Invisible region

Ultraviolet region

Infrared region

Controlling rods inserted into the reactor are of metal:

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Aluminium

Cadmium

Magnesium

Copper

If current flowing through a solenoid becomes four times, then magnetic field inside becomes.

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two times

three times

four times

Half

An electron moves at 2 x 10² m/sec perpendicular to magnetic field of 2T what is the magnitude of magnetic force:

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1 x 10^-6 N

6.4 x 10^-17 N

3.6 x 10^-24 N

4 x 10⁶ N

Two down and one up quarks make

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Proton

Neutron

~~photon~~

Positron

A block body is an ideal:

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Absorber

Radiator

Both a & b

None of above

Electric current produces magnetic field, was suggested by.

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Faraday

Oersted

Henry

Lenz

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

In order to measure potential difference voltmeter is always connected in.

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Series

Parallel

Both a and b

Neither in series nor in parallel

The only difference between the construction of D.C and A.C is.

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Carbon burshes

Coil

Commutator

Magnetic field

Drift velocity of electrons is.

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10^-1 m/s

10^-2 m/s

10^-3 m/s

10³ m/s

Shear modulus is expressed as:

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G = tanθ/F/A

F/A/tanθ

F/tanθ

tanθ/A

Electron vibrating 94,000 times each second will produce radio waves of frequency.

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94 Hz

940 HZ

94 Hz

490 Hz

The unit of magnetic induction B is

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Coulomb

Ampere

Coulomb/ampere

Weber/m²

The "toner" of photocopier is given:

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Positive charge

Negative charge

Remains neutral

All of above

The photon with energy greater than 1.02 MeV can interact with matter as.

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Photoelectric effect

Compton effect

Pair production

annihilation of matter

A galvanometer is an electrical instrument used to

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Measure resistance

Measure voltage

Detect passage of current

None of these

Number of electros emitted in photo electric effect depend upon.

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Intensity of incident light

Frequency of incident light

Energy of incident light

Wavelength of incident of light

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Ics Part 2 Physics Test Online MCQs With Answers

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