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Question 141Asked in DSSSB TGT Computer Science, 24 Jun 2023, Shift 3 (4:30 PM)

An LED emits green light of wavelength λ = 5511.11 Å. Find the value of Eg.

An LED emits green light of wavelength λ = 5511.11 Å. Find the value of Eg.
  1. A1.25 eV
  2. B2.25 eV
  3. C3.606 eV
  4. D36.06 eV
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Correct answer: (B) 2.25 eV

Explanation

Eg = hc/λ = 12400 eV·Å / 5511.11 Å ≈ 2.25 eV.

From DSSSB TGT Computer Science PYQ, 24 Jun 2023, Shift 3 (4:30 PM)

This is question 141 of DSSSB TGT Computer Science PYQ, 24 Jun 2023, Shift 3 (4:30 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.