Megha asked her mother to install a solar water heater on the roof top. Her mother asked about the need of such installation. Megha convinced her mother and succeeded in setting up a solar water heater on her roof top. (i) State one advantage of installing the solar water heater to Megha’s family and to the society. (ii) What qualities of Megha are reflected in her action? (iii) State one limitation in using solar water heater. -Science