NCERT Class XI Chemistry Structure of Atom Solutions

Question : 46

Total: 67

Nitrogen laser produces a radiation at a wavelength of 337.1 nm. If the number of photons emitted is 5.6 × 1024, calculate the power of this laser.

Solution:

Wavelength of nitrogen = 337.1 nm = 337.1 × 10–9m
Number of photons = 5.6 × 1024
Energy of photons (E) =

nhc

5.6×1024×6.626×10−34×3×108

337.1×10−9

= 3.30 × 106J
Power of this nitrogen laser is 3.30 × 106J

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