Find the change in the temperature on the Fahrenheit scale and on Kelvin scale, if an iron piece is heated from `30^(@)C" to "90^(@)C`.

Options

A. `180^(@)F, 60K`
B. `100^(@)F, 55K`
C. `100^(@)F, 65K`
D. `60^(@)F, 180K`

Answer

A

Explanation

Here, `Delta T_(C )= 90^(@)C - 30^(@)C = 60^(@)C`
`Delta T_(F) = (9)/(5) Delta T_(C )= (9)/(5) (60^(@)C)= 108^(@)F`
`rArr Delta T= Delta T_(C )= 60K`