Which one of the following statements regarding lenses is not correct?

10 g of ice at $$-$$10$$^\circ$$ C is mixed with 10 g of water at 0$$^\circ$$ C. The amount of heat required to raise the temperature of mixture to 10$$^\circ$$ C is

Soaps clean surfaces on the principle of based on

Water is heated with a coil of resistance R connected to domestic supply. The rise of temperature of water will depend on

1. supply voltage

2. current passing through the coil

3. time for which voltage is supplied

Select the correct answer using the codes given below.