Question

Statement I: For a given medium polarizing angle is $60^{\circ }$. The critical angle for this medium is $35^{\circ }$
Statement II: $\mu =\tan i_p$.

• A. If both statements are true and statement II is the correct explanation of statement I.
• B. If both statements are true but statement II is not the correct explanation of statement I.
• C. If statement I is true but statement II is false.
• D. If both statements are false.

Answer 1

Answer: (B)

From the relation,
$\mu =\tan i_p=\tan 60^{\circ }=\sqrt{3}$
and also $\mu =\frac{1}{\sin C}$
$\sin C=\frac{1}{\mu }=\frac{1}{\sqrt{3}}$
$\therefore C={\sin }^{-1}\left(\frac{1}{\sqrt{3}}\right)={\sin }^{-1}(0.577)$
$\therefore =35.23^{\circ }\cong 35^{\circ }$