Modulus of rigidity of a liquid
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- 1When a uniform wire of radius $r$ is stretched by a $2kg$ weight, the increase in its length is $2.00\, mm$. If the radius of the wire is $r/2$ and other conditions remain the same, the increase in its length is .......... $mm$View Solution
- 2Two wires of same length and radius are joined end to end and loaded. The Young's modulii of the materials of the two wires are $Y_{1}$ and $Y_{2}$. The combination behaves as a single wire then its Young's modulus is:View Solution
- 3Match List-$I$ with List-$II$ :View Solution
List-$I$ List-$II$ $(A)$ A force thatrestores anelastic body of unit area to its original state $(I)$ Bulkmodulus $(B)$ Two equal andopposite forcesparallel toopposite faces $(II)$Young'smodulus $(C)$Forcesperpendiculareverywhere tothe surface perunit areasameeverywhere $(III)$ Stress $(D)$Two equal andopposite forceperpendicular toopposite faces $(IV)$ Shearmodulus Choose the correct answer from the options given below:
- 4In the below graph, point $D$ indicatesView Solution
- 5If one end of a wire is fixed with a rigid support and the other end is stretched by a force of $10 \,N,$ then the increase in length is $0.5\, mm$. The ratio of the energy of the wire and the work done in displacing it through $1.5\, mm$ by the weight isView Solution
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- 9A metal wire of length $'L'$ is suspended vertically from a rigid support. When a body of mass $M$ is attached to the lower end of wire, the elongation in wire is $'l'$, consider the following statementsView Solution
$(I)$ the loss of gravitational potential energy of mass $M$ is $Mgl$
$(II)$ the elastic potential energy stored in the wire is $Mgl$
$(III)$ the elastic potential energy stored in wire is $\frac{1}{2}\, Mg l$
$(IV)$ heat produced is $\frac{1}{2}\, Mg l$
Correct statement are :-
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