Physics Class 12 Objective Questions. We covered all the Physics Class 12 Objective Questions in this post for free so that you can practice well for the exam.
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Physics Class 12 Objective Questions for Students
Hooke’s law is valid for
(a) only proportional region of the stress-strain curve.
(b) entire stress-strain curve.
(c) entire elastic region of the stress-strain curve.
(d) elastic as well as plastic region of the stress-strain curve.
Option a – only proportional region of the stress-strain curve
If by applying a force, the shape of a body is changed, then the corresponding stress is
(a) tensile stress
(b) bulk stress
(c) shearing stress
(d) compressive stress
Option c – shearing stress
The breaking stress of the wire depends on
(a) the material of the wire.
(b) length of the wire.
(c) radius of the wire.
(d) shape of the cross-section of the wire.
Option a – the material of the wire
Longitudinal strain is defined when
(a) under a large force change in length is smaller.
(b) under a weak force change in length is smaller.
(c) under a large force change in length is larger.
(d) None of the above
Option a – under a large force change in length is smaller
The unit of strain is
(a) Newton
(b) Kilogram
(c) Kelvin
(d) None of these
Option d – None of these
We covered all the physics class 12 objective questions above in this post for free so that you can practice well for the exam.
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