Physics
Grade-10
Easy

Question

A solar water heater cannot be used to get hot water on

  1. Hot day
  2. Sunny day 
  3. Windy day
  4. Cloudy day

hintHint:

Solar Energy harnessing needs Sunny Days.

The correct answer is: Cloudy day


    • On a cloudy day, the clouds cover the sun 
    • So the solar panels won't get any energy from sun and it cannot generate electricity(which is used to run water heater).
    • Hence solar water heater cannot be used on cloudy day.