MEDIUM
12th Maharashtra Board
IMPORTANT
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What do you mean by frequency and wave number associated with a wave?

Important Questions on Dual Nature of Radiation and Matter

MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Can you recall?>Q 4
What are the characteristics of the particles of matter?
EASY
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Can you recall?>Q 5
How do we define momentum of a particle?
EASY
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Can you recall?>Q 6
What are the different types of energies that a particle of matter can possess?
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Can you tell?>Q ➤
A particular metal used as a cathode in an experiment on photoelectric effect does not show photoelectric effect when it is illuminated with green light. Which of the colours in the visible spectrum are likely to generate photocurrent?
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Use your brain power>Q 1
Is solar cell a photocell?
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Use your brain power>Q 1
Can you estimate the de Broglie wavelength of the earth?
MEDIUM
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Can you tell?>Q ➤
The expression p=Ec defines the momentum of a photon. Can this expression be used for momentum of an electron or proton?
HARD
12th Maharashtra Board
IMPORTANT
Physics Standard 12>Chapter 14 - Dual Nature of Radiation and Matter>Use your brain power>Q 1

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The above diagram shows the diffraction of electron beam when it falls on a graphite target. By increasing the voltage, the radius of the diffraction rings will decrease. Try to explain why?