A) 5/2
B) \[\sqrt{(5/2)}\]
C) \[\sqrt{(3/2)}\]
D) 3/2
Correct Answer: B
Solution :
The line of sight of the observer remains constant, making an angle of 45° with the normal. \[\sin \theta =\frac{h}{\sqrt{{{h}^{2}}+{{(2h)}^{2}}}}\]=\[\frac{1}{\sqrt{5}}\] \[\mu =\frac{\sin {{45}^{o}}}{\sin \theta }\] \[=\frac{1/\sqrt{2}}{1/\sqrt{5}}=\sqrt{\left( \frac{5}{2} \right)}\]You need to login to perform this action.
You will be redirected in
3 sec