The tail of a comet is directed away from the sun because of which reason?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) - The radiation pressure emitted by the sun on the comet throws its tail away from the Sun.
Comet tails will always point away from the sun because of the radiation pressure of sunlight. The force from sunlight on the small dust particles pushing them away from the sun is greater than the force of gravity acting in the direction toward the sun.