Refraction of light from air to glass and from air to water are shown in figure (i) and figure (ii) below. The value of the angle `theta` in the case of refraction as shown in figure (iii) will be

Options

A. `30^@`
B. `35^@`
C. `60^@`
D. `41^@`

Answer

B

Explanation

`and ""^wmu_g=(sin 60^@)/(sin 35^@)`
`""^amu_g xx ""^wmu_g`
`implies (sin 60^@)/(sin 41^@) xx (sin41^@)/(sin theta^@)=(sin 60^@)/(sin 35^@) or`
`implies sin theta sin =35^@`
`theta=35^@`