Vt x height of shorter opening

Vt x height of longer opening

Ax height of shorter opening

Vi x height of longer opening

(i) and (ii)

(i) and (iii)

(ii) and (iv)

(ii) and (iii)

sum of thickness of both leaves

two-third of the sum of thickness of both the leaves

actual thickness of the stronger leaf

larger of [b] and [c]

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

(i) and (ii) are correct

(i) and (iii) are correct

(ii) and (iii) are correct

(i), (ii) and (iii) are correct