Correct option is B
The correct answer is (b) 8 minutes
Explanation:
· The time taken for sunlight to reach Earth is approximately 8 minutes and 20 seconds on average.
· The distance between the Sun and Earth is not constant, as Earth's orbit is elliptical. The travel time can range from about 8 minutes 10 seconds to 8 minutes 27 seconds, but the average is commonly rounded to 8 minutes for simplicity.
· Light travels at a speed of approximately 300,000 kilometers per second (186,000 miles per second).
· The average distance between the Sun and Earth is about 150 million kilometers (93 million miles). Dividing the average distance by the speed of light yields approximately 500 seconds, or 8 minutes and 20 seconds.
Information Booster:
· Time Lag: This time delay means that when we look at the Sun, we are seeing it as it was approximately 8 minutes ago.
· Speed of Light: The speed of light is the fastest speed at which anything can travel in the universe and is considered a constant.
· Orbital Variation: The slight variation in travel time is due to the Earth's elliptical orbit. The time is shorter at perihelion (closest to the Sun) and longer at aphelion (farthest from the Sun).
Additional Knowledge: (a) 5 minutes
· This is incorrect. This amount of time is too short for light to travel the average distance from the Sun to the Earth.
(c) 20 minutes
· This is incorrect. This is too long for sunlight to travel from the Sun to the Earth. It would take a signal longer to reach Mars or Venus, depending on their position.
(d) 6 minutes
· This is incorrect. This is approximately the time it takes for sunlight to reach Venus, not Earth.