Question # 1

The minimum energy required by an electron to eject from metal surface is known as:

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Photo energy

Critical energy

Threshold energy

Work function

The photoelectric effect was explained by:

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Einstein

Davison

Hertz

Planck

The energy of photon of wavelength 1240 nm is:

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0.5 eV

1.0 eV

1.5 eV

2.0 eV

The number of electrons emitted depend upon

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Colour of target surface

Shape of surface

Frequency of incident light

Intensity of incident light

The maximum energy of the photoelectrons depends upon:

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Frequency of incident light

Intensity of incident light

Nature of metal

Both (a) & (c)

Moving photons posses:

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Energy

Momentum

Wavelength

All of these

The maximum kinetic energy of emitted photoelectrons depends upon:

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The intensity of incident light

Frequency of the incident light

Temperature of the surface

All of above

Interference and diffraction confirm:

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Particle nature

Wave nature

Dual nature

None of these

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MDCAT Physics Chapter 14 Electronics Online Test MCQs With Answers

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