Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Physics Work Power Energy
An electric heater of 1000 W is used for two hours in a day. What is the cost of using it for a month of 28 days, if one unit costs 3 rupees?
1
Rs. 155
2
Rs. 168
3
Rs. 175
4
More than one of the above
5
None of the above