A) 3
B) 5
C) 7
D) 9
Correct Answer: B
Solution :
\[D=360{}^\circ -2\theta ,\] \[240{}^\circ =360{}^\circ -2\theta \] \[2\theta =120{}^\circ ,\] \[\therefore \] \[\theta =60{}^\circ \] Then, number of images observable \[N=\frac{360{}^\circ }{60{}^\circ }-1\] \[N=6-1\] \[N=5\]You need to login to perform this action.
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