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PHY 104 PHY 104 Past Questions Objective Question
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Question

The wavelength of a photon one is twice the wavelength of photon two, determine the ratio between their energy.
Options
A E₁ : E₂ = 2 : 1
B E₁ : E₂ = 1 : 2
Correct Answer
C E₁ : E₂ = 1 : 4
D E₁ : E₂ = 4 : 1
Correct Answer

Option B is the correct answer.

Detailed Explanation

The energy of a photon is inversely proportional to its wavelength: E = hc/λ. If λ₁ = 2λ₂, then E₁/E₂ = (hc/λ₁) / (hc/λ₂) = λ₂/λ₁ = λ₂/(2λ₂) = 1/2. So E₁ : E₂ = 1 : 2.

Hint

E = hc/λ. Energy is inversely proportional to wavelength.

Question Info

Course: PHY 104
Topic: PHY 104 Past Questions
Type: Objective
Difficulty: Not specified
Question 762 of 947
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