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A monochromatic beam of light passes fro...

A monochromatic beam of light passes from a denser medium into a rarer medium. As a result

A

Its veloclty increases

B

Its velocly decreases

C

Its frequency decreases

D

Its wavelength decreases

Text Solution

Verified by Experts

The correct Answer is:
A
`"As",""_(a)mu_(m)=(V_a)/(V_m)`
"When light travels from denser to rarer medium",
`""_(m)mu_(a)=(V_m)/(V_a)implies""_(a)mu_(m)=(V_a)/(V_m)`
`implies(V_a)/(V_m)gt1+impliesV_(a)gtV_(m)` "Its velocity increases in rarer medium".`
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