Given in fig are examples of some potential energy functions in one dimension. The total enrgy of the particle is indicated by a cross on the ordinate axis. In each case, specify the regions, if any, in which the particle cannot be found for the given energy. Also, indicate the minimum total energy the particle must have in each case. Think of simple physical contexts for which these potential energy shapes are relevant.

Explanation

(a) `x gt a , 0`
(b) `-oo lt x lt oo, V_(1)`
(c ) `x lt a, x gt b, -V_(1)`
(d) `-b"/"2 lt x lt -a"/"2, a"/"2 lt x lt b"/"2, -V_(1)`.