Gamma Rays Are Photons with Very High Energy $4.1 \times 10 ^{- 13} \mathrm {~J} ?$

question 7

Multiple Choice

Gamma rays are photons with very high energy. How many visible-light photons with a wavelength of 500 nm would you need to equal the energy of a gamma-ray photon with energy $4.1 \times 10 ^{- 13} \mathrm {~J} ?$

• A) 1.0 × 10⁶
• B) 1.4 × 10⁸
• C) 6.2 × 10⁹
• D) 3.9 × 10³

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