A) zero
B) \[90{}^\circ \]
C) \[15{}^\circ \]
D) \[45{}^\circ \]
Correct Answer: C
Solution :
Here, \[i=0,\,\,A={{30}^{o}}\] Now\[\mu =\frac{\sin e}{\sin {{r}_{2}}}=\frac{\sin e}{\sin A}\](since\[A=0\,\,{{r}_{2}}\]) \[\therefore \] \[e={{45}^{o}}\] \[\therefore \] \[\delta =i+e-A=0+{{45}^{o}}-{{30}^{o}}\mathbf{=1}{{\mathbf{5}}^{\mathbf{o}}}\]You need to login to perform this action.
You will be redirected in
3 sec