EASY
11th CBSE
IMPORTANT
Earn 100

Distinguish between elasticity and plasticity.

Important Questions on Mechanical Properties of Solids

HARD
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 3
Two wires of different materials are suspended from a rigid support. They have same length and diameter and carry the same load at the free ends. Will extension, strain and stress be different?
MEDIUM
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 5
An elastic wire is cut to half its original length. How would it affect the maximum load that the wire can support?
EASY
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 8

Elasticity has different meaning in physics and in our daily life. Comment.

MEDIUM
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 9
A wire stretches by a certain amount under a load. If the load and radius both increased to four times, find the stretch caused in the wire.   
MEDIUM
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 10
Steel is more elastic than rubber. Explain why? 
MEDIUM
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 11
Define elasticity. When a body is called elastic and when is it called plastic? Explain elastic limit.
HARD
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 13
Define young’s modulus of elasticity, normal stress and longitudinal strain. Give unit of each of them. Derive an expression for the elastic potential energy of a wire, when stretched.
HARD
11th CBSE
IMPORTANT
Super Refresher Physics 11>Chapter 9 - Mechanical Properties of Solids>SELF EVALUATION TEST>Q 14
Derive an expression for the elastic potential energy stored in a stretched wire under stress. Define the terms elastic after effect and elastic fatigue.