Question

Thorium is used in light-bulb. Give geographical reasons.

Answer 1

we know thorium is lightweighted,excellent strength and creep resistance at high temperature.Thorium is used to coat the tungsten filaments in light bulbs.I hope you understand.

Answer 2

Hey dear,

◆ Thorium is used in light-bulb because -

• Thorium is weak radioactive element found as Th-232.
• It has a high melting point & remains solid even after heating at bulb-temprature.
• When heated, thorium dioxide burns brightly producing white light.
• Therefore, thorium is coated over filaments of tungsten in light-bulbs, TV, etc.

Hope this helps you. Thanks for asking..