A) Centrifugal force
B) Electrical repulsion
C) Attraction of comet due to other planets
D) Radiation pressure.
Correct Answer: D
Solution :
A comet is a heavenly body made of gas and dust particles. Due to solar radiations, these gas and dust particles are pushed outwards, as the comets approach the Sun. These gases which move out are said to form a tail which points away from the Sun.
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