1
Question
When light wave suffers reflection at the interface from air to glass, the
change in phase of the reflected wave is equal to
[CPMT 1991; J & KCET 2004]
When light wave suffers reflection at the interface from air to glass, the
change in phase of the reflected wave is equal to
[CPMT 1991; J & KCET 2004]
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Solution
The correct option is B
When light is reflected from denser medium, a phase difference of 
always occurs.
When light is reflected from denser medium, a phase difference of always occurs.