SSC CHSL 19 Mar 2020 Shift 1 Paper

Question : 89 of 100

Marks: +1, -0

What is the radius of the Moon?

$1.78 \×10^{\^} 6 {\m}$
$1.79 \×10^{\^} 6 {\m}$
$1.74 \×10^{\^} 5 {\m}$
$1.74 \×10^{\^} 6{\m}$

Solution:

The radius of the Moon is

1.74 \×10^{\^} 6 {\m}

. Moon is the only natural satellite of the Earth. It is the fifth largest satellite in the Solar System. The Moon's orbit around Earth has a sidereal period of

27.3

days and a synodic period of

29.5

days. It has a geochemically distinct crust, mantle and core. The Moon has a solid iron-rich inner core with a radius possibly as small as

240 {\km}

and a fluid outer core primarily made of liquid iron with radius of roughly

300 {\km}

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