NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET

NEET: NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET

The document NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET is a part of the NEET Course Physics Class 11.
All you need of NEET at this link: NEET

Q.1. Dimensions of stress are :     [2020]
A: [ML0T–2]
B: [ML–1T–2]
C: [MLT2]
D: [ML2T–2]
Ans: 
B
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET

Q.2. A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to L1 when mass M is suspended from its free end. The expression for Young's modulus is :     [2020]
A:
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
B:
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
C:
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
D:

NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
Ans: B
from young’s modulus formula
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET

Q.3. When a block of mass M is suspended by a long wire of length L, the length of the wire becomes (L + l). The elastic potential energy stored in the extended wire is:    [2019]
A: Mgl
B: MgL
C: NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
D: NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
Ans:
C
Solution:
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
U = 1/2 ((work done by gravity)NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET

Q.4. Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Δl on applying a force F, how much force is needed to stretch the second wire by the same amount ?    [2018]
A: 9F
B: 6F
C: 4F
D: F
Ans:
A
Solution:
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET

Q.5. The bulk modulus of a spherical object is 'B'. If it is subjected to uniform pressure 'p', the fractional decrease in radius is:-    [2017]
A: NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
B: NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
C: NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
D: NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET
Ans:
C
Solution:

NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET

Q.6. Copper of fixed volume ‘V’ is drawn into wire of length ‘l’. When this wire is subjected to a constant force ‘F’, the extension produced in the wire is ‘Δl’. Which of the following graphs is straight line?    [2014]
A: Δl versus l/l2
B: Δl versus l
C: Δl versus l/l
D: Δl versus l2
Ans: 
D
Solution:
NEET Previous Year Questions (2014-20): Mechanical Properties of Solids Notes | Study Physics Class 11 - NEET


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