What is the unit of relative density?
1). kg/m
2). kg/m2
3). kg/m3
4). It has no unit
2. A piece of wood is held under water. The up thrust on it will be:
3. Stationary wave is formed by
4. The quality of sound produced by an?instrument depends on the
5. At which of the following place, weight of an object is maximum?
6. A sphere rolls down on two inclined planes of different angles but same height it does so
7. A fountain pen Works on the principle of
8. Which resource is both renewable and inexpensive?
9. Which of the following is the fastest communication channel?
10. Who among the following developed the technology of underground nuclear explosion ?