Pluto,s rotation period is 6.4 days while period along the orbit is ..... years.

PHYSICAL SCIENCES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Pluto,s rotation period is 6.4 days while period along the orbit is ____ years.

A	274.8
B	299.7
C	248.4
D	256.2

Explanation:

Detailed explanation-1: -The same surfaces of Charon and Pluto always face each other, a phenomenon called mutual tidal locking. Charon orbits Pluto every 6.4 Earth days.

Detailed explanation-2: -Pluto rotates on its axis every 6.39 days and takes 247.8 years to revolve around the Sun. It has five known satellites.

Detailed explanation-3: -Pluto’s moon Charon orbits Pluto every 6.4 days with a semimajor axis of 19, 700 kilometers.

Detailed explanation-4: -In our solar system, anything orbiting the Sun obeys a simplified form of Kepler’s third law if the period T is measured in years and the semi-major axis a distance is measured in AU. If Pluto has a semi-major axis distance a=40 then T2=403 which gives T=253 years.

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