Explanation

The human eye has peak sensitivity in the green-yellow region of the visible spectrum (around 555 nm wavelength).

This is due to the way the photoreceptor cells (cones) in the retina respond to different wavelengths of light.

Explanation

• Fluorescent lamps consist of glass tubes filled with a mixture of argon and mercury vapor.
• Mercury vapour → produces ultraviolet (UV) light.
• Phosphor coating → converts UV into visible light.
• Argon gas → helps start and maintain the discharge.
• Electrodes → emit electrons.
• Ballast/choke → controls the current.