Q142 / 180 · COMEDK 2016 · Physics

A calcite crystal is placed over a dot on a paper sheet and the crystal is rotate(d) On viewing through the calcite or sees,

  • A
    a single stationary dot
  • B
    two stationary dots
  • C
    two dots rotating about one another
  • Correct answer
    D
    one dot rotating about the other stationary dot sometimes coinciding with it

Solution

When a calcite crystal is placed over a dot on a piece of paper, one will observe two dots from above. If the crystal is rotated, then the dot produced by emergent ray will rotate around the siationary dot, which sometimes coincide with it.

Hence, the correct answer is option: 'D'.

Relevant Questions