Question

[8] As light moves from air to water, its wave speed increases/decreases / stays the , same ? 19] As light moves from air to water, its wavelength incrcases, decrcass stays, the stays the [10] As light moves from air to water, its amplitude increases /decreases /stays the same

Answer 1

According to relation, v = c/n = 3 times 10^8/1.33 = 2.25 m/s (10^8) when light moves from air to water its wave speed decreases. lambda prime = lambda/n when light moves from air to water its wavelength also decreases. Since wavelength is decreasing the amplitude increases when light moves from air to water.