Question

Speed of sound?
2. Which objects can you not see ina dark night
- luminous object of non-op Luminous objects!
3. It is possible to see through on object that
does not allow light to pass through it​

Answer 1

Explanation:

Speed of sound= 343m/s

2. non-luminous object

3. No, it is not possible to see through an object that does not allow light to pass through it

Hope it helps you