CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Thermodynamic Processes

Assertion A :...

Question

Assertion (A) : Young's modulus for a perfectly plastic body is zero.
Reason (R) : For a perfectly plastic body, restoring force is zero.

A

Both assertion and reason are true and the reason is correct explanation of the assertion

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

Both assertion and reason are true, but reason is not correct explanation of the assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Assertion is true, but the reason is false

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Assertion is false, but the reason is true

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Both assertion and reason are true and the reason is correct explanation of the assertion
Young's Modulus= (restoring force per unit area)/(elongation of wire/length of wire)
now for a plastic body the restoring force is zero and it ultimately makes the Young's modulus zero.
hence both assertion and reason are true

Suggest Corrections

thumbs-up

0

Similar questions

Q. Assertion : A body is moved from

x = 2

x = 1

, under a force

F = 4 x

, the work done by the force is negative.
Reason: Force and displacement are in opposite directions.

Assertion (A): Steel is more elastic than rubber.

Reason (R) : Under a given deforming force, steel is deformed less than rubber.

A) Both Assertion and Reason are true and the reason is correct explanation of the assertion
B)Both Assertion and Reason are true, but reason is not correct explanation of the assertion
C) Assertion is true, but the reason is false
D) Assertion is false, but the reason is true

Q. (i)
Assertion: A circle is not a rectilinear figure.
Reason: A figure formed by straight lines only is called a rectilinear figure.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.
(ii)
Assertion: All right angles are equal to one another.
Reason: A unique line passes through a single point.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.

Q. Assertion: Average kinetic energy in one oscillation during

SHM

\frac{1}{4} m ω^{2} A^{2}

.
Reason: Maximum kinetic energy is

\frac{1}{2} m ω^{2} A^{2}

.

Q. Assertion: C₄ – photosynthetic pathway is more efficient than C₃ pathway Reason: Photorespiration is suppressed in C₄ plants

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Thermodynamic Processes

PHYSICS

Watch in App

explore_more_icon

Explore more

Thermodynamic Processes

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon