question_answer

An object is placed between two plane min-ors inclined at angle \[\theta \] with each other. What is the total number of images formed?

Answer:

                If \[\theta \] is a submultiple of\[\text{18}0{}^\circ \], then the number of images formed is \[n=\frac{360}{\theta }-1\] If \[\theta \] is not a submultiple of\[\text{18}0{}^\circ \], then the number of images formed is the integer next higher than\[\left( \frac{360}{\theta }-1 \right)\] .