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Can you explain the answer of this question below:
The threshold frequency v0 for a metal is 7.0 x 1014 s-1. Radiation of frequency v = 1.0 x 1015 s-1 hits the metal. Kinetic energy of the emitted electron is
  • A:
    2.0 x 10-18 J
  • B:
    1.60 x 10-17 J
  • C:
    1.60 x 10-19 J
  • D:
    2.0 x 10-19 J
The answer is d.
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Can you explain the answer of this question below:The threshold freque...
K.E= h(f-f•).K.E= 6.625 × 10^ -34 (1×10^15- 7×10^14).K.E= 6.625×10^-34 (10-7) × 10^14.K.E= 6.625×3 × 10^-20.k.E= 19.8× 10^-20.as 19.8 is approximately 20....K .E= 20×10^-20.K.E= 2×10^-19 j.
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Can you explain the answer of this question below:The threshold frequency v0 for a metal is 7.0 x 1014 s-1. Radiation of frequency v = 1.0 x 1015 s-1 hits the metal. Kinetic energy of the emitted electron isA:2.0 x 10-18 JB:1.60 x 10-17 JC:1.60 x 10-19 JD:2.0 x 10-19 JThe answer is d. for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Can you explain the answer of this question below:The threshold frequency v0 for a metal is 7.0 x 1014 s-1. Radiation of frequency v = 1.0 x 1015 s-1 hits the metal. Kinetic energy of the emitted electron isA:2.0 x 10-18 JB:1.60 x 10-17 JC:1.60 x 10-19 JD:2.0 x 10-19 JThe answer is d. covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:The threshold frequency v0 for a metal is 7.0 x 1014 s-1. Radiation of frequency v = 1.0 x 1015 s-1 hits the metal. Kinetic energy of the emitted electron isA:2.0 x 10-18 JB:1.60 x 10-17 JC:1.60 x 10-19 JD:2.0 x 10-19 JThe answer is d..
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