List of top Questions asked in Delhi UMET/DPMT- 2005

A $1\,m$ long steel wire of cross-sectional area $ 1\,mm^{2}$ is extended by $1\, mm$. If $ Y=2\times 10^{11}N/m^{2}$ , then the work done is :

The distance between the sun and the earth be $r$, then the angular momentum of the earth around the sun is proportional to