Fill in the blanks :
1. The solid angle is measured in ……
2. ……recognized the need of ‘Standard Units’ for physical quantities.
3. The coldness or hotness of a substance is expressed by …….
4. ……… is used to measure electric current.
5. ……of substance, contains 6.023 x 10+23 atoms or molecules.
6. Luminous Intensity is the amount of visible light, that is emitted in unit area per unit ……
7. Quartz clock uses ………oscillations.
8. The uncertainty in measurement is called as …….
9. ……is the closeness of the measured value to the original value.
10. The intersection of two straight lines gives us ………
