#### If is real, the maximum value of  is Option 1) Option 2) Option 3) Option 4)

As we learnt in

Rate Measurement -

Rate of any of variable with respect to time is rate of measurement. Means according to small change in time how much other factors change is rate measurement:

- wherein

Where dR / dt  means Rate of change of radius.

let

For real x

maximum value =41

Option 1)

This option is incorrect

Option 2)

This option is correct

Option 3)

This option is incorrect

Option 4)

This option is incorrect