MEDIUM
12th West Bengal Board
IMPORTANT
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The work function of zinc is 3.6eV. The threshold frequency for zinc is 9×1014 Hz. Calculate Planck's constant 1eV=1.6×10-12 erg 

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

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 6
The photoelectric threshold wavelength for a certain metal is 2640A→. What will be the maximum kinetic energy of photoelectrons emitted from the metal if ultraviolet light of wavelength 1810A→ is incident on it? Planck's constant =6.2×10-34Js speed of light is vacuum =3×105 m/s
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 7
The threshold wavelength of tungsten is 2400A∘. When tungsten is illuminated with light of wavelength 1600A∘,Find work function,
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.