A plane glass plate is placed over a various coloured letters ( violet , green , yellow , red ) . The letter which appears to raised more is

Options

A. Red
B. Yellow
C. Green
D. Violet

Answer

s

Explanation

Shift in the image of letter due to glass plate ,
`S= d-(d)/(mu)=d(1-1)/(mu)`
Since `lamda_(v) lt lamda_(g) lt lamda_(y) lt lamda_(r)`, `mu_(v)gt mu_(g)gt mu_(y)gtmu_(r)`
`therefore S_(v)gt S_(g)gtS_(y)gtS_(r)`
Hence maximum shift appears for violet letters .