Q28.The work functions of Aluminium and Gold are 4. 1 eV and 5. 1 eV respectively. The ratio of the slope of the stopping potential versus frequency plot for Gold to that of Aluminium is (1) 1. 24 (2) 2 (3) 1 (4) 1. 5
What This Question Tests
This question directly tests the understanding of the photoelectric effect and the slope of the stopping potential versus frequency graph, which is a fundamental concept.
Concepts Tested
Formulas Used
eV_s = hf - Ο
V_s = (h/e)f - (Ο/e)
π NCERT Sections This Tests
11.5 β In An Experiment On Photoelectric Effect, The Slope Of The Cut-Off Voltage
Physics Class 12 Β· Chapter 11
11.5 In an experiment on photoelectric effect, the slope of the cut-off voltage versus frequency of incident light is found to be 4.12 Γ 10β15 V s. Calculate the value of Planckβs constant.
11.9 β Light Of Wavelength 488 Nm Is Produced By An Argon Laser Which Is
Physics Class 12 Β· 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 β The Work Function Of Caesium Metal Is 2.14 Ev. When Light Of
Physics Class 12 Β· Chapter 11
11.2 The work function of caesium metal is 2.14 eV. When light of frequency 6 Γ1014Hz 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?
π Question Details
- Chapter
- Dual Nature of Matter
- Topic
- Photoelectric effect
- Year
- 2023
- Shift
- 06 Apr Shift 2
- Q Number
- Q28
- Type
- MCQ
- NCERT Ref
- Class 12 Physics Ch 11: Dual Nature of Matter
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