# Questions with detailed step by step solutions from Physical World and Measurement

##### Questions in Physical World and Measurement
1. Who discovered neutron ?
2. Light year is the unit of
3. Estimated radius of the universe is of the order of
4. The ratio of $\text{A}\text{.U}\text{.}$ and angstrom unit $(\overset{\circ }{\mathop{\text{A}}}\,)$ is of the order of
5. $1HZ=$
6. Given that $r={{m}^{2}}\,\sin pt,$ where $t$ represents time . If the unit of $m$ is N, then the unit if $r$ is
7. Which of the following unit less quantity ?
8. What is the unit of reduction factor of tangent galvanometer ?
9. Given that force $\left( F \right)$ is given by$F=\operatorname{P}{{t}^{1}}+Qt.$ Here $t$ is time .The unit of $p$ is same as that of
10. The "Pascal second" is equivalent to the unit of