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(A) : Stress is Restoring force per unit...

(A) : Stress is Restoring force per unit area
(R) : Interatomic forces in solids are responsible for the property of elasticity.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • Inter molecular forces in solid hydrogen are

    A
    Covalent forces
    B
    Vander Waals forces
    C
    Hydrogen bond
    D
    dipole - dipole bond

  • Inter molecular forces in solid hydrogen are

    A
    Covalent forces
    B
    van der Waals forces
    C
    Hydrogen bond
    D
    All the above

  • (A): A medium must have elasticity to support wave motion. (R): Restoring force responsible for wave motion results due to elasticity of the medium.

    A
    Both 'A' and 'R' are true and 'R' is the correct, explanation of 'A'.
    B
    Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'
    C
    A' is true and 'R' is false
    D
    Both 'A' and 'R' are false

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    (A) : Steel is more elastic than rubber. (R) : Under given deforming force, steel is deformed less than rubber.

    (A) : Natural rubber is elastic and non-cryslalline. (R) : Weak vander Waal's forces are present.

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