369972
Assertion : The materials which have very small range of plastic extension are called brittle materials. Reason : If the stress is increased beyond the elastic limit, the material will break before reaching ultimate tensile strength (UTS).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Brittle have small plastic region beyond elastic limit. The plastic range of values of stress at which a material is deformed permanently and can no longer regain original dimensions. Brittle are glass ceremic that crack beyond elastic limit. So correct option is (3).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369973
Assertion : The material which has very small range of plastic extension are called brittle materials. Reason : Rubber does not have plastic range and the breaking point is very close to elastic limit.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Option (2) is correct.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369974
The strain vs stress curves of three wires of different materials are shown in the figure. , and are the elastic limits of the wires. The figure shows that
1 Elasticity of wire is maximum
2 Elasticity of wire is maximum
3 Tensile strength of is maximum
4 None of these
Explanation:
As stress is shown on - axis and strain on y - axis So the elasticity of wire is minimum and of wire is maximum.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369975
Statement A : The stress-strain behaviour varies from material to material. Statement B : A rubber can be pulled to several times its original length and still returns to its original shape.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The stress-strain curves vary from material to material. Rubber is an elastomer, it increases several times and returns back to its original shape. So option (3) is correct.
369972
Assertion : The materials which have very small range of plastic extension are called brittle materials. Reason : If the stress is increased beyond the elastic limit, the material will break before reaching ultimate tensile strength (UTS).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Brittle have small plastic region beyond elastic limit. The plastic range of values of stress at which a material is deformed permanently and can no longer regain original dimensions. Brittle are glass ceremic that crack beyond elastic limit. So correct option is (3).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369973
Assertion : The material which has very small range of plastic extension are called brittle materials. Reason : Rubber does not have plastic range and the breaking point is very close to elastic limit.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Option (2) is correct.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369974
The strain vs stress curves of three wires of different materials are shown in the figure. , and are the elastic limits of the wires. The figure shows that
1 Elasticity of wire is maximum
2 Elasticity of wire is maximum
3 Tensile strength of is maximum
4 None of these
Explanation:
As stress is shown on - axis and strain on y - axis So the elasticity of wire is minimum and of wire is maximum.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369975
Statement A : The stress-strain behaviour varies from material to material. Statement B : A rubber can be pulled to several times its original length and still returns to its original shape.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The stress-strain curves vary from material to material. Rubber is an elastomer, it increases several times and returns back to its original shape. So option (3) is correct.
369972
Assertion : The materials which have very small range of plastic extension are called brittle materials. Reason : If the stress is increased beyond the elastic limit, the material will break before reaching ultimate tensile strength (UTS).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Brittle have small plastic region beyond elastic limit. The plastic range of values of stress at which a material is deformed permanently and can no longer regain original dimensions. Brittle are glass ceremic that crack beyond elastic limit. So correct option is (3).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369973
Assertion : The material which has very small range of plastic extension are called brittle materials. Reason : Rubber does not have plastic range and the breaking point is very close to elastic limit.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Option (2) is correct.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369974
The strain vs stress curves of three wires of different materials are shown in the figure. , and are the elastic limits of the wires. The figure shows that
1 Elasticity of wire is maximum
2 Elasticity of wire is maximum
3 Tensile strength of is maximum
4 None of these
Explanation:
As stress is shown on - axis and strain on y - axis So the elasticity of wire is minimum and of wire is maximum.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369975
Statement A : The stress-strain behaviour varies from material to material. Statement B : A rubber can be pulled to several times its original length and still returns to its original shape.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The stress-strain curves vary from material to material. Rubber is an elastomer, it increases several times and returns back to its original shape. So option (3) is correct.
369972
Assertion : The materials which have very small range of plastic extension are called brittle materials. Reason : If the stress is increased beyond the elastic limit, the material will break before reaching ultimate tensile strength (UTS).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Brittle have small plastic region beyond elastic limit. The plastic range of values of stress at which a material is deformed permanently and can no longer regain original dimensions. Brittle are glass ceremic that crack beyond elastic limit. So correct option is (3).
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369973
Assertion : The material which has very small range of plastic extension are called brittle materials. Reason : Rubber does not have plastic range and the breaking point is very close to elastic limit.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Option (2) is correct.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369974
The strain vs stress curves of three wires of different materials are shown in the figure. , and are the elastic limits of the wires. The figure shows that
1 Elasticity of wire is maximum
2 Elasticity of wire is maximum
3 Tensile strength of is maximum
4 None of these
Explanation:
As stress is shown on - axis and strain on y - axis So the elasticity of wire is minimum and of wire is maximum.
PHXI09:MECHANICAL PROPERTIES OF SOLIDS
369975
Statement A : The stress-strain behaviour varies from material to material. Statement B : A rubber can be pulled to several times its original length and still returns to its original shape.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
The stress-strain curves vary from material to material. Rubber is an elastomer, it increases several times and returns back to its original shape. So option (3) is correct.
