Which one among the foUiowing is the correct order of power consumption for light of equal intensity?

The power consumption for light of equal intensity is determined by the luminous efficacy of the technology. Light Emitting Diodes (LEDs) are the most efficient, consuming significantly less power than other sources. For instance, an LED requires only 6-8 watts to produce the same light as a 60-watt incandescent bulb. Compact Fluorescent Lamps (CFLs) are the next most efficient, using about 70% less energy than incandescent bulbs but requiring approximately double the wattage of an LED for the same brightness. Standard Fluorescent Tubes are more efficient than incandescent bulbs but generally less efficient than modern LEDs. Incandescent bulbs are the least efficient, as they convert only 10% of electrical input into light, wasting the rest as heat. Therefore, the correct order of increasing power consumption is LED < CFL < Fluorescent Tube < Incandescent Bulb.

Sources

1. [1] https://www.energy.gov/energysaver/led-lighting