Question # 1

In A.C circuit of inductor which one is true

Choose an answer

Voltage leads current by phase angle π/2

Voltage lags current by π/2

Current leads voltage by π/2

Both remain in phase

Pair production occurs only when energy of photon is at least equal in:

Choose an answer

1.02keV

1.02 eV

1.02 MeV

1.02 GeV

The minimum frequency needed to emit an electron form metal surface is called:

Choose an answer

Work function

Threshold frequency

Quanta frequency

All of above

The number of electrons in one coulomb charge is equal to

Choose an answer

6.2 x 10¹⁸ electrons

Zero electrons

1.6 x 10^-22 electrons

6.2 x 10²¹ electrons

Total flux through a closed surface depends on.

Choose an answer

Shape of surface

Medium only

Charge enclosed only

Charge and Medium

The internal resistance of a capacitor is called:

Choose an answer

Impedance

Resistance

Reactance

Conductance

The numerical value of Compton wavelength is equal to

Choose an answer

3.43 x 10^-12 m

1.43 x 10^-12m

2.43 x 10^-12m

0.43 x 10^-12m

A Current flowing towards the reader is denoted by.

Choose an answer

Cross

a bracket

A dot

Positive sign

The ratio Beta in transistor is called.

Choose an answer

Voltage gain

Emitter gain

Current gain

Nuclear gain

Earth orbital speed is

Choose an answer

10 km/s

20 km/s

30 km/s

40 km/s

The semi conductor diode has the property of

Choose an answer

Two way conduction

Zero conduction

One way conduction

Amplification

Both Xenon and cesium have

Choose an answer

33 isotopes

34 Isotopes

36 Isotopes

35 Isotopes

In photovoltaic cell, current is directly proportional to.

Choose an answer

Wavelength of light

Intensity of light

Energy

Frequency of light

The peak value of alternating current is 5√2 A. The mean square value of current will be:

Choose an answer

5A

2.5A

5√2A

5²

Rutherford performed on experiment on a nuclear reaction in:

Choose an answer

1921

1981

1927

1932

The photo copying process is called

Choose an answer

Xerography

Inkjet Printer

Both (a) and (b)

None of these

LDR becomes necessary when op amp is used as a

Choose an answer

Night switch

Inverter

Comparator

Rectifier

The mutual inductance of the coils depends upon.

Choose an answer

Stiffness of the coils

Density of coils

Material of coils

Geometry of the coils

More Classes

Other Links

Physics ICS Part 2 Online MCQ's Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer