A wire obeys Hooks law is of length 11 when it is in equilibrium under – McqOptions

MCQOPTIONS

1.	A wire obeys Hooks law is of length 11 when it is in equilibrium under a tension F1. Its length becomes 12 when the tension is increased to F2. The energy stored in the wire during this process is
A.	(F1+F2) (121+122)
B.	(F1+F2) (122-112)
C.	(F1+F2) (12-11)
D.	(F1+F2) (12-11)
Answer» D. (F1+F2) (12-11)

Discussion

No Comment Found

Related MCQs

A ferromagnet will become fully magnetized at
A completely filled band is called
A wire of length L is stretched by a length ? when a force F is applied at one end. If the elastic limit is not exceeded the amount of energy stored in the wire is
A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber?
A uniform steel wire of length 4m and area of cross-section 3 10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2 1011 Nm-2 the energy stored in the wire is
If the density of atoms remain same along any direction in a crystal is called
In a semiconductors the charge carriers are
In simple cube one atom or molecule lies at its
Many of the semi conductors are crystals of the type
Materials in which valence electrons are tightly bound to their atoms at low temperature are called