Question

Assertion : It we double the circular radius of a satellite, then its potential energy, kinetic energy and total mechanical energy will become half.
Reason : Orbital speed of a satellite.
`upsilon prop (1)/(sqrt(r )`
where, `r` is its radius of orbit.
A. If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. If both Assertion and Reason are true but Reason is not the correct explantion of Assertion.
C. If Assertion is true, but the Reason is false.
D. If Assertion is false but the Reason is true.

Answer 1

Correct Answer - B
`V = - (GMm)/(R)`, `K = (GMm)/(2r)`, `E = - (GMm)/(2r)`
and `V = sqrt((GM)/(R))`