https://www.geekmcq.com/
CSS Solved Papers
Physics Chemistry

Engineering :: Renewable Sources of Energy


  Suppose that the transmissivity is zero for a very thick piece of material. If the material is perfectly black where ? = absorptivity and ? = reflectivity
[A]. ? = 0[B]. ? + ? = 0
[C]. ? = 1[D]. ? = 0

Answer: Option D


Write your comments here:
Name *:     Email:

© 2012-2024 by GeekMCQ™ Technologies. All Rights Reserved | Copyright | Terms of Use & Privacy Policy | Referals

Contact us: info@geekmcq.com