Properties of Solids & Liquids-Elastic Behavior [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 1 - 4 of 42
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Question 1
Question MCQ▾
Mark the correct statements
(1) Sliding of molecular layer is much easier than compression or expansion
(2) Reciprocal of bulk modulus of elasticity is called compressibility
(3) Hollow shaft is much stronger than a solid rod of same length and same mass
(4) It is difficult to twist a long rod as compared to small rod
Select the correct answers and mark it according to the following codes:
Choices
Choice (4) | Response | |
---|---|---|
a. | 1,2 and 3 are correct | |
b. | 1 and 2 are correct | |
c. | 2 and 4 are correct | |
d. | 1 and 3 are correct |
Question 2
Question MCQ▾
A 4.0 m long copper wire of cross sectional area 1.5 cm2 is stretched by a force of 4.8 × 103 N stress will be -
Choices
Choice (4) | Response | |
---|---|---|
a. | 4.4 × 107 | |
b. | 5.0 × 107 | |
c. | 3.2 × 107 | |
d. | None of the above |
Question 3
Question MCQ▾
The lengths and radii of two wires of same material are respectively L, 3L, and 3R, R. Equal weights are applied on then. If the elongations produced in them are l1 and l2 respectively then their ratio will be
Choices
Choice (4) | Response | |
---|---|---|
a. | 1: 18 | |
b. | 1: 8 | |
c. | 2: 1 | |
d. | 8: 1 |
Question 4
Question MCQ▾
Length of a wire is doubled, when 15 × 108 N/m2 stress is applied on it. Its Young՚s modulus of elasticity in N/m2 will be
Choices
Choice (4) | Response | |
---|---|---|
a. | 15 × 108 | |
b. | 10 × 108 | |
c. | 20 × 108 | |
d. | 25 × 1010 |