CUET Preparation Today
A beam of monochromatic blue light of wavelength 440nm in air travels in water ( μ= 4/3). What will be its wavelength in water? |
330nm 340nm 440nm 430nm |
330nm |
λ ∝ 1/μ λ2/λ1 = μ1/μ2 λ2 = (3/4)x 440 (since μ21 = 4/3 and λ1 = 440nm) = 330nm |
