EASY
12th West Bengal Board
IMPORTANT
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The threshold wavelength of tungsten is 2400A∘. When tungsten is illuminated with light of wavelength 1600A∘,Find work function,

Important Questions on Photoelectric Emission and Production and Properties of X-Rays

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 7
The threshold wavelength of tungsten is 2400A∘. When tungsten is illuminated with light of wavelength 1600A∘,Find maximum kinetic energy of the emitted electron,
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 7
The threshold wavelength of tungsten is 2400 A∘. When tungsten is illuminated with light of wavelength 1600 A∘,Find stopping potential.
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 8
Photoelectrons are emitted from a metal surface when UV light of wavelength λ=300 nm is incident on it. The minimum negative potential required to stop the emission of electrons is 0.54 V. Calculate the energy of the incident photons
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 8
Photoelectrons are emitted from a metal surface when UV light of wavelength λ=300 nm is incident on it. The minimum negative potential required to stop the emission of electrons is 0.54 V. Calculate the maximum kinetic energy of the photoelectrons emitted,
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 8
Photoelectrons are emitted from a metal surface when UV light of wavelength λ=300 nm is incident on it. The minimum negative potential required to stop the emission of electrons is 0.54 V. Calculate the work function of the material. Explain all answer in eV
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 9
A monoelectronic source, emitting light of wavelength 600nm  has a power output of 60 W. Calculate the number of photons emitted by this source in 2 minutes.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 10
The threshold frequency of a metal is v0. When the light of frequency 2v0 is incident on the metal plate, the maximum velocity of the electrons is v1. When the frequency of the incident radiation is increased to 5v0, the maximum velocity of the electron emitted is v2. Find the ratio of v1 to v2
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 19 - Photoelectric Emission and Production and Properties of X-Rays>EXERCISE 19>Q 11
Two metals X and Y have work functions 2eV and 5eV respectively. Which metal will emit electrons when irradiated with light of wavelength 400 nm and why?