A reference frame attached to the earth
(A) Is an inertial frame by definition
(B) Cannot be an inertial frame because the earth is revolving around the sun.
(C) Is an inertial frame because Newton's laws are applicable in this frame
(D) Cannot be an inertial frame because the earth is rotating about its own axis.
Which of the above statements is /are correct?

A only

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A and B

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B and D

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D only

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Solution

The correct option is C B and D
Earth can not be a inertial frame of reference because it is revolving around the sun and also on its own axis. A accelerated object can't be taken as inertial frame of reference and a reference frame attached to an non-inertial frame also can't be taken as inertial frame of reference. Hence both 'B' and 'D' are true.

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