The correct answer is (a) Compact Fluorescent Lamp.
A compact fluorescent lamp (CFL) is a type of fluorescent lamp that is designed to be used in place of an incandescent light bulb. CFLs are more energy-efficient than incandescent bulbs and have a longer lifespan. They also produce less heat than incandescent bulbs, which can save money on air conditioning costs.
CFLs work by passing an electric current through a gas, which causes the gas to emit ultraviolet light. This ultraviolet light then strikes a phosphor coating on the inside of the lamp, which converts the ultraviolet light into visible light.
CFLs are available in a variety of shapes and sizes, and they can be used in a variety of applications, including general lighting, task lighting, and decorative lighting.
(b) Centrally Fixed Lamp is not the full form of C.F.L. A centrally fixed lamp is a type of lamp that is mounted in the center of a room. This type of lamp is often used in offices and other public spaces.
(c) Chemical Fluorescent Lamp is not the full form of C.F.L. A chemical fluorescent lamp is a type of lamp that uses a chemical reaction to produce light. This type of lamp is often used in scientific research and other applications where a high-intensity light source is needed.
(d) Condensed Fluorescent Lamp is not the full form of C.F.L. A condensed fluorescent lamp is a type of fluorescent lamp that is designed to be used in a compact space. This type of lamp is often used in flashlights and other portable lighting devices.