If a cylinder of diameter 1.0cm at 30°c is to be slide into a hole of diameter 0.9997 cm in a steel plate at the same temperature, then minimum required rise in the temperature of the plate is [coefficient of linear expansion of steel = 12 xx 10^(-6) //^(@) C ]

If a cylinder of diameter 1.0cm at 30°c is to be slide into a hole of

1.	If a cylinder of diameter 1.0cm at 30°c is to be slide into a hole of diameter 0.9997 cm in a steel plate at the same temperature, then minimum required rise in the temperature of the plate is [coefficient of linear expansion of steel = 12 xx 10^(-6) //^(@) C ]
Answer» `25^(@) C` `35^(@) C` `45^(@) C` `55^(@) C` ANSWER :A