Question

Monochromatic light of frequency 5 x 10" Hz travelling in vacuum enters a mediu refractive index 1.5. Its wavelength in the medium is (a) 5000 Å (b) 4000 Å (c) 5500 Å (d) 6000 ​

Answer 1

Answer:



n = c/ v

n = c/ f. Lambda

Lambda = c/ nf

Lambda = 3 *10^8 / 1.5 × 5 × 10^ 11

Lambda = 4 × 10^ (-4)

Plz check first what's in the power of frequency 10^ ??