A stationary telescope monitoring a rocket ship observes the ship emitting flashes of light at 1-second intervals. If the ship begins moving toward the telescope at speed 0.6c, with what period does the telescope observe the light flashes?

a.) 0.5 sec

b.) 2 sec

c.) 0.8 sec

d.) 1 sec

e.) 1.2 sec

The period of the telescope observe the light flashes is 1.2 sec.

(e) is correct option.

Explanation:

Given that,

Flashes of light = 1 sec

Speed of telescope =0.6c

We need to calculate the period of the telescope observe the light flashes

Using formula of period

Put the value into the formula

Hence, The period of the telescope observe the light flashes is 1.2 sec.