Dual Nature of Matter and Radiation (AIIMS (All India Institute of Medical Sciences) Physics): Questions 9 - 12 of 27

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Question number: 9

» Dual Nature of Matter and Radiation » Photoelectric Effect

Appeared in Year: 2004

Assertion-Reason▾

Assertion (Ꭺ)

Photoelectric effect demonstrates the wave nature of light.

Reason (Ꭱ)

The number of photo electrons is proportional to the frequency of light.

Choices

Choice (4) Response

a.

Ꭺ is true but Ꭱ is false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

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Question number: 10

» Dual Nature of Matter and Radiation » De-Broglie Relation

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

The energy (E) and momentum (p) of a photon are related byEquation .

Reason (Ꭱ)

The photon behaves like a particle.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

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Question number: 11

» Dual Nature of Matter and Radiation » Dual Nature of Radiation

Appeared in Year: 2005

Assertion-Reason▾

Assertion (Ꭺ)

A body that is a good radiator is also a good absorber of radiation at a given wavelength.

Reason (Ꭱ)

According to Kirchhoff’s law the absorptivity of a body is equal to its emissivity at a given wavelength.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

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Question number: 12

» Dual Nature of Matter and Radiation » Dual Nature of Radiation

Appeared in Year: 2003

Assertion-Reason▾

Assertion (Ꭺ)

A tube light emits white light.

Reason (Ꭱ)

Emission of light in a tube takes place at a very high temperature.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

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