Question

Match List-I with List-II and select answer using the the codes given below the lists :
List-I
A. Assumption in the theory of simple bending
B. The point at which the bending stress is maximum for any cross-section
C. The point at which the bending stress is zero for any cross-section
D. The point in the cross section through which the neutral axis passes

List - II
1. Neutral axis
2. Centroid
3. The plane sections remain plane
4. Extreme fibre
5. The cross-section is circular

Code:
A B C D

• A. 5 4 1 2
• B. 3 1 2 4
• C. 5 1 2 4
• D. 3 4 1 2

Answer 1

The correct option is D 3 4 1 2

The plane sections remain plane in simple bending

Bending stress $=\frac{My}{I}$

At extreme fibre y is maximum so bending stress is also maximum.
At neutral axis y = 0 so bending stress is zero.
Neutral axis passes through centroid of cross-section.