Dual Nature of Matter and Radiation-Dual Nature of Radiation (AIIMS Physics): Questions 1 - 3 of 3

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Question number: 1

» 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

Question number: 2

» 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

Question number: 3

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

MCQ▾

Question

If the wavelength of light is 5000 , then the number of waves in 5mm length will be –

Choices

Choice (4) Response
a.

1000

b.

2000

c.

3000

d.

10000

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