Q16.In photoelectric experiment energy of 2.48eV irradiates a photo sensitive material. The stopping potential was measured to be 0.5 V. Work function of the photo sensitive material is : (1) 1.68eV (2) 2.48eV (3) 1.98eV (4) 0.5eV
What This Question Tests
This question is a direct application of Einstein's photoelectric equation, relating incident photon energy, work function, and stopping potential.
Concepts Tested
Formulas Used
E = Wโ + eV_s
๐ NCERT Sections This Tests
11.3 โ The Photoelectric Cut-Off Voltage In A Certain Experiment Is 1.5 V.
Physics Class 12 ยท Chapter 11
11.3 The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted?
11.9 โ Light Of Wavelength 488 Nm Is Produced By An Argon Laser Which Is
Physics Class 12 ยท Chapter 11
11.9 Light of wavelength 488 nm is produced by an argon laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping (cut-off) potential of photoelectrons is 0.38 V. Find the work function of the material from which the emitter is made.
11.2 โ The Work Function Of Caesium Metal Is 2.14 Ev. When Light Of
Physics Class 12 ยท Chapter 11
11.2 The work function of caesium metal is 2.14 eV. When light of frequency 6 ร1014Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic energy of the emitted electrons, (b) Stopping potential, and (c) maximum speed of the emitted photoelectrons?
๐ Question Details
- Chapter
- Dual Nature of Matter
- Topic
- Photoelectric effect
- Year
- 2024
- Shift
- 06 Apr Shift 1
- Q Number
- Q16
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 11: Dual Nature of Radiation and Matter
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