# 31 Year NEET Previous Year Questions: Mechanical Properties of Solids

## 5 Questions MCQ Test Topic-wise MCQ Tests for NEET | 31 Year NEET Previous Year Questions: Mechanical Properties of Solids

Description
Attempt 31 Year NEET Previous Year Questions: Mechanical Properties of Solids | 5 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Topic-wise MCQ Tests for NEET for NEET Exam | Download free PDF with solutions
QUESTION: 1

### Two wires A and B are of the same material. Their lengths are in the ratio 1 : 2 and the diameter are in the ratio 2 : 1. If they are pulled by the same force, then increase in length will be in the ratio

Solution:

We know that Young's modulus Since Y, F are same for both the wires, we have,   So,    ℓ1 : ℓ2 = 1 : 8

QUESTION: 2

### When an elastic material with Young’s modulus Y is subjected to stretching stress S, elastic energy stored per unit volume of the material is

Solution:

Energy stored per unit volume  stress (stress / Young' s modulus) (stress)2 /( Young ' s modulus) QUESTION: 3

### The compressibility of water is 4 × 10–5 per unit atmospheric pressure. The decrease in volume of 100 cm3 of water under a pressure of 100 atmosphere will be

Solution: Here, P = 100 atm,
K = 4 × 10–5  and V = 100 cm3.
Hence, ΔV = 0.4 cm3

QUESTION: 4

The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied ?

Solution: So, extension, [∵ F and Y are constant]    The ratio of is maximum for case (d).
Hence, option (d) is correct.

QUESTION: 5

If the ratio of diameters, lengths and Young’s modulus of steel and copper wires shown in the figure are p, q and s respectively, then the corresponding ratio of increase in their lengths would be [NEET Kar. 2013] Solution:

From formula, Increase in length     Use Code STAYHOME200 and get INR 200 additional OFF Use Coupon Code