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The number of photons emitted in 10 hours by a 60W sodium lamp (λ, of photon = 6000 Å)           
    [Take he = 12400 EvÅ, h = Planck's constant, c = speed of light]
  • a)
    6.50 × 1024                  
  • b)
    6.40 × 1023                  
  • c)
    8.40 × 1023             
  • d)
    3.40 × 1023            
Correct answer is option 'A'. Can you explain this answer?
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Let , n be the number of photon , n= (60×10×60×60)÷[(12400/6000)×(1.6×10^-19)] 

Then, n=6.5×10^24
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The number of photons emitted in 10 hours by a 60W sodium lamp (λ, of photon = 6000 Å) [Take he = 12400 EvÅ, h = Planck's constant, c = speed of light]a)6.50 × 1024b)6.40 × 1023c)8.40 × 1023d)3.40 × 1023Correct answer is option 'A'. Can you explain this answer? 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 The number of photons emitted in 10 hours by a 60W sodium lamp (λ, of photon = 6000 Å) [Take he = 12400 EvÅ, h = Planck's constant, c = speed of light]a)6.50 × 1024b)6.40 × 1023c)8.40 × 1023d)3.40 × 1023Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The number of photons emitted in 10 hours by a 60W sodium lamp (λ, of photon = 6000 Å) [Take he = 12400 EvÅ, h = Planck's constant, c = speed of light]a)6.50 × 1024b)6.40 × 1023c)8.40 × 1023d)3.40 × 1023Correct answer is option 'A'. Can you explain this answer?.
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