Question-82596

Question Number 82596 by peter frank last updated on 22/Feb/20

Commented by mr W last updated on 23/Feb/20

(a)

i t h i n k t h e b e a m w i l l s t a y i n w a t e r .

(b)

t h e b e a m w i l l b e p a r t i a l l y r e f l e c t e d

a n d p a r t i a l l y g o i n t o t h e w a t e r

(s e e g r e e n l i n e s) .

Commented by mr W last updated on 23/Feb/20

Commented by mr W last updated on 23/Feb/20

\frac{\sin α}{\sin 49 °} = \frac{\sin 51 °}{\sin 90 °}

\Rightarrow α = 35.9 ° < 49 °

Commented by peter frank last updated on 23/Feb/20

t h a n k y o u