Dual Nature of Matter and Radiation (AIIMS Physics): Questions 1 - 4 of 27

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Question number: 1

» Dual Nature of Matter and Radiation » Photoelectric Effect

Appeared in Year: 2004

MCQ▾

Question

A photon of energy 4 eV is incident on a metal surface whose work function is 2eV. The minimum reverse potential to be applied for stopping the emission of electrons is – [AIIMS]

Choices

Choice (4) Response
a.

6V

b.

4V

c.

8V

d.

2V

Question number: 2

» Dual Nature of Matter and Radiation » Photoelectric Effect

Appeared in Year: 2006

MCQ▾

Question

In photoelectric effect, the electrons are ejected from metals if the incident light has a certain minimum – [AIIMS]

Choices

Choice (4) Response
a.

Angle of incidence

b.

Wavelength

c.

Amplitude

d.

Frequency

Question number: 3

» Dual Nature of Matter and Radiation » Black-Body Radiation

Appeared in Year: 2006

MCQ▾

Question

Three objects coloured black, gray and white can withstand hostile conditions up to 2800°C. These objects are thrown into a furnace where each of them attains a temperature of 2000°C. Which object will glow brightest?

Choices

Choice (4) Response
a.

Gray object

b.

The black object

c.

The white object

d. Question does not provide sufficient data or is vague

Question number: 4

» Dual Nature of Matter and Radiation » Black-Body Radiation

Appeared in Year: 2003

MCQ▾

Question

Shown below are the black body radiation curves at temperatures T1 and T2 (T2>T1) . Which of the following plots is correct?

[AIIMS, AMU 2002]

Choices

Choice (4) Response
a.
Black body radiation curve: Choice A

Black Body Radiation Curve: Choice A

In figure, a black body radiation curve is shown

b.
Black body radiation curve: Choice B

Black Body Radiation Curve: Choice B

In figure, a black body radiation curve is shown

c.
Black body radiation curve: Choice C

Black Body Radiation Curve: Choice C

In figure, a black body radiation curve is shown

d.
Black body radiation curve: Choice D

Black Body Radiation Curve: Choice D

In figure, a black body radiation curve is shown

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