Although the surfaces of a goggle lens are curved,it does not have any power.Explain,why.

Why do neurons not have division power?

Which cells of tissues do not have division power and why?

Although boron trifluoride adds on trimethylamine but it does not add on triphenylamine. Explain.

Which of the following does not have any unit?

Why does a gun recoil when a bullet is fired from the gun ? Explain.

No work is done in moving a test charge over an equipotential surface. Explain, why.

Why do the muscle cells and nerve cells not have power of growth and regeneration?

Although nitrogen does not adsorb on surface at room temperature, it adsorbs on the same surface at 83K . Which one of the following statements is correct?