Question

1 Which of the following can be used for measuring time? (Tick the correct options. More than on option can be correct.) (a) The to-and-fro movement (fluttering) of a flag (b) The to-and-fro movement of a simple pendulum (c) The shadow of a stationary object placed in an open area during the day (d) The blinking of a person's eyes​

Answer 1

Answer:

c

Explanation:

this method is being used from earlier days