engineering chemistry MCQ #993

engineering chemistry MCQ #993

1. Question 1

   Q1. The energy of a photon is given by E = hν. What is the energy of a photon with frequency 5 × 10¹⁴ Hz?

   • A) 3.31 × 10⁻¹⁹ J
   • B) 3.31 × 10⁻¹⁸ J
   • C) 3.31 × 10⁻¹⁷ J
   • D) 3.31 × 10⁻²⁰ J

   Answer: 3.31 × 10⁻¹⁹ J

   Explanation: Using E = hν, we get E = 6.626 × 10⁻³⁴ * 5 × 10¹⁴ = 3.31 × 10⁻¹⁹ J.