Question

CFL bulbs disposing poses a big problem though they are efficient why

Answer 1

First, CFLs use significantly less energy -- 75 percent less energy than incandescent light bulbs. That means CFLs require less wattage to produce an equivalent amount of light. For example, you could use a 20-watt CFL and enjoy the same amount of light as a 75-watt incandescent.

CFLs are up to four times more efficient than incandescent bulbs. You can replace a 100-watt incandescent bulb with a 22-watt CFL and get the same amount of light .while initially they cost more, CFLs are less expensive in the long run because they last much longer than incandescent bulbs.