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A Laser Emits a Pulse of Light That Lasts 10

Question 72

Multiple Choice

A laser emits a pulse of light that lasts 10 ns.The light has a wavelength of 690 nm,and each pulse has an energy of 480 mJ.How many photons are emitted in each pulse? (c = 3.0 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s)

A) 1.7 × 10¹⁸
B) 2.1 × A laser emits a pulse of light that lasts 10 ns.The light has a wavelength of 690 nm,and each pulse has an energy of 480 mJ.How many photons are emitted in each pulse? (c = 3.0 × 108 m/s,h = 6.626 × 10-34 J ∙ s) A) 1.7 × 1018 B) 2.1 × C) 2.6 × D) 3.1 ×
C) 2.6 × A laser emits a pulse of light that lasts 10 ns.The light has a wavelength of 690 nm,and each pulse has an energy of 480 mJ.How many photons are emitted in each pulse? (c = 3.0 × 108 m/s,h = 6.626 × 10-34 J ∙ s) A) 1.7 × 1018 B) 2.1 × C) 2.6 × D) 3.1 ×
D) 3.1 × A laser emits a pulse of light that lasts 10 ns.The light has a wavelength of 690 nm,and each pulse has an energy of 480 mJ.How many photons are emitted in each pulse? (c = 3.0 × 108 m/s,h = 6.626 × 10-34 J ∙ s) A) 1.7 × 1018 B) 2.1 × C) 2.6 × D) 3.1 ×

A Laser Emits a Pulse of Light That Lasts 10

Multiple Choice

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