Question

thermometers and electric bulbs made of glass.give reasons​

Answer 1

Explanation:

Thermometers and electric bulbs are made of glass because of two reasons.

• Thermometers and electric bulbs both are associated with heat. And glass being a bad conductor, has a very low coefficient of expansion. This helps in the accurate reading of the temperature. And in case of bulb, it doesn’t burst out of heat.
• Thermometers and electric bulbs both are needed to be visible from outside. Thermometers are needed to see the temperature reading. And, bulbs need to give out light.