Two statements are given choose the most appropriate option-
A. Photoelectric effect will not be observed if energy of incident radiation is less than work function of metals.
R.If the energy of incident radiation is equal to work function of metal then kinetic energy of photo electrons is zero.
1. Both statements are correct and R is correct explanation of A.
2.Both statements are correct but R is not correct explanation of A.
3. Statement A is incorrect but R is correct.
4. Statement A is correct but R is incorrect.