The time taken by moonlight to reach the Earth is:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 1.3 seconds
Moonlight is sunlight reflected by the Moon, and it travels at the speed of light, about \(3\times10^{5}\) km/s. The Moon is on average about 3,84,400 km from the Earth.
Time \(\displaystyle =\frac{\text{distance}}{\text{speed}}=\frac{384400}{300000}\) s
Time \(\approx1.28\) s, that is, about 1.3 seconds
Sunlight, coming from about 15 crore km away, takes about 8 minutes 20 seconds to reach the Earth.