MPSC PYQScienceLightenglish
6) Identify incorrect statements of the following ? (a) Kaleidoscope is made by putting 3 mirrors at an angle of 600 to each other. (b) Kaleidoscopes are used as Telescopes. (c) When 2 mirrors are placed at 450 to each other then it is used as a periscope. Answer Options: 1) Only a 2) Only b 3) Only c 4) None
A.Only a
B.Only b
C.Only c
D.None
Correct answer: B