GCSE Physics - Visible and UV Light #67

What is the primary advantage of using optical fibers over copper wires for data transmission?

• Optical fibers are cheaper to produce.

• Optical fibers can transmit more information with less distortion.

• Optical fibers are easier to install.

• Optical fibers are more environmentally friendly.

Which color of visible light has the shortest wavelength?

• Red

• Green

• Blue

• Violet

What is a common source of ultraviolet radiation?

• The sun

• Fluorescent lights

• LED bulbs

• Incandescent bulbs

How do fluorescent lights produce visible light?

• By using LED technology

• By reflecting visible light

• By emitting infrared light

• By converting ultraviolet light into visible light

How does ultraviolet radiation help in security applications?

• By marking items with invisible codes visible under UV light

• By making objects glow in the dark

• By heating objects to high temperatures

• By changing the color of materials