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The number of photon emitted per second by a 40W source of mono chromatic light of wavelength 6000Å is given by x × 1020. Find the value of x.
Correct answer is '1.206'. Can you explain this answer?
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The number of photon emitted per second by a 40Wsource of mono chromat...
To find the number of photons emitted per second by a 40W source of monochromatic light of wavelength 6000 Å (angstroms), we can use the formula:
Number of photons = Power / Energy of each photon
First, we need to find the energy of each photon using the formula:
Energy of each photon = Planck's constant * speed of light / wavelength
Planck's constant (h) = 6.63 x 10^(-34) Js
Speed of light (c) = 3 x 10^8 m/s
Wavelength (λ) = 6000 Å = 6000 x 10^(-10) m (converting angstroms to meters)
Energy of each photon = (6.63 x 10^(-34) Js) * (3 x 10^8 m/s) / (6000 x 10^(-10) m)
Energy of each photon = 3.315 x 10^(-19) J
Now, we can calculate the number of photons using the formula:
Number of photons = Power / Energy of each photon
Power = 40 W
Number of photons = 40 W / (3.315 x 10^(-19) J)
Number of photons = 1.207 x 10^20 photons
Therefore, the number of photons emitted per second by a 40W source of monochromatic light of wavelength 6000 Å is approximately 1.207 x 10^20 photons.
Number of photons = Power / Energy of each photon
First, we need to find the energy of each photon using the formula:
Energy of each photon = Planck's constant * speed of light / wavelength
Planck's constant (h) = 6.63 x 10^(-34) Js
Speed of light (c) = 3 x 10^8 m/s
Wavelength (λ) = 6000 Å = 6000 x 10^(-10) m (converting angstroms to meters)
Energy of each photon = (6.63 x 10^(-34) Js) * (3 x 10^8 m/s) / (6000 x 10^(-10) m)
Energy of each photon = 3.315 x 10^(-19) J
Now, we can calculate the number of photons using the formula:
Number of photons = Power / Energy of each photon
Power = 40 W
Number of photons = 40 W / (3.315 x 10^(-19) J)
Number of photons = 1.207 x 10^20 photons
Therefore, the number of photons emitted per second by a 40W source of monochromatic light of wavelength 6000 Å is approximately 1.207 x 10^20 photons.
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The number of photon emitted per second by a 40Wsource of mono chromatic light of wavelength 6000Åis given byx× 1020. Find the value ofx.Correct answer is '1.206'. Can you explain this answer? for Physics 2025 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about The number of photon emitted per second by a 40Wsource of mono chromatic light of wavelength 6000Åis given byx× 1020. Find the value ofx.Correct answer is '1.206'. Can you explain this answer? covers all topics & solutions for Physics 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The number of photon emitted per second by a 40Wsource of mono chromatic light of wavelength 6000Åis given byx× 1020. Find the value ofx.Correct answer is '1.206'. Can you explain this answer?.
The number of photon emitted per second by a 40Wsource of mono chromatic light of wavelength 6000Åis given byx× 1020. Find the value ofx.Correct answer is '1.206'. Can you explain this answer? for Physics 2025 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about The number of photon emitted per second by a 40Wsource of mono chromatic light of wavelength 6000Åis given byx× 1020. Find the value ofx.Correct answer is '1.206'. Can you explain this answer? covers all topics & solutions for Physics 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The number of photon emitted per second by a 40Wsource of mono chromatic light of wavelength 6000Åis given byx× 1020. Find the value ofx.Correct answer is '1.206'. Can you explain this answer?.
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