How many 100w light bulbs could be powered for one year by the direct conversion of 1g of matter into energy?

No. of 100 W bulbs, n = 28,539 bulbs

Given:

Power of a single bulb = 100 W

Time period, T = 1 yr = = 31,536,000 s

mass of matter, m = 1 g =

Solution:

According to Eintein's mass-energy equivalence:

E =

E =

E =  

Power of a single bulb, P =  

                                       P =  

                                       P = 28,53,881 W

No. of 100 W bulbs, n =

                                 n =

                                 n = 28,539