One end of a conducting rod is maintained at temperature \[50{}^\circ C\] and at the other end, ice is melting at \[0{}^\circ C\]. The rate of melting of ice is doubled if:

the temperature is made \[200{}^\circ C\] and the area of cross-section of the rod is doubled

the temperature is made \[100{}^\circ C\] and length of rod is made four times

area of cross-section of rod is halved and length is doubled

the temperature is made \[100{}^\circ C\] and the area of cross-section of rod and length both are doubled

One end of a conducting rod is maintained at temperature \[50{}^\circ

1.	One end of a conducting rod is maintained at temperature \[50{}^\circ C\] and at the other end, ice is melting at \[0{}^\circ C\]. The rate of melting of ice is doubled if:
A.	the temperature is made \[200{}^\circ C\] and the area of cross-section of the rod is doubled
B.	the temperature is made \[100{}^\circ C\] and length of rod is made four times
C.	area of cross-section of rod is halved and length is doubled
D.	the temperature is made \[100{}^\circ C\] and the area of cross-section of rod and length both are doubled
Answer» E.