A ray of light is incident upon an air/water interface ( it passes from air into water) at an angle of `45^(@)` . Which of the following quantities ch

Question

A ray of light is incident upon an air/water interface ( it passes from air into water) at an angle of `45^(@)` . Which of the following quantities ch

A ray of light is incident upon an air/water interface ( it passes from air into water) at an angle of `45^(@)` . Which of the following quantities change as the light enters the water?
(I) wavelength `" "` (II) frequency `" "` (III) speed of propagation (IV) direction of propagation
A. I , III only
B. III, IV only
C. I , II ,IV only
D. I , III , IV only

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
As Speed of light in vaccum/air
`mu` = Speed of light if medium
`mu = (c)/(v) implies ` velocity is different in different medium From v= n`lambda`
But frequency is the fundamental property . It never change by changing the medium hence `lambda` is also changed as v is change.

4 views Answered 2023-02-05 15:29