Totally reflecting prisms are preferred to mirrors in periscopes because
I. mirror givegive multiple images
II. silvering on mirrors is easy damaged
III. mirrors reflect less light than totally reflecting prisms
I. mirror givegive multiple images
II. silvering on mirrors is easy damaged
III. mirrors reflect less light than totally reflecting prisms
-
A.
I only -
B.
I and II only -
C.
I and III only -
D.
II and III only -
E.
I,II and III