IEA 4- Expert Evidence

Even a "student " may be treated as an expert under Section 45 of the Indian Evidence Act, 1872. It was laid down by the Supreme Court in

In which of the following judgment it was ruled that when two medical experts differ in their opinion on the same point, court must accept the opinion which fit in with the direct testimony?

In which case Supreme Court held that an expert evidence is a weak type of Evidence and it is not safe to rely upon it without seeking independent and reliable corroboration?

In which case Supreme Court held that where there is inconsistency between eye witness on the point of how the injury was caused, the evidence of doctor cannot override the unimpeachable testimony of eye witness ?