Answer:
When glass rod is rubbed with silk, glass h lose electrons easily and silk grabs them away from the glass atoms. So after rubbing, the glass becomes positively charged and the silk becomes negatively charged
Explanation:
Answer:
Explanation:
We are given that
Energy difference,
We have to find the magnitude of B.
Bohr magneton=
We know that magnetic field ,B=
By using the formula
Hence, the magnitude of B=
Answer:
m = image distance/object distance
m=35/15=7/3
f=uv/(u+v)
35*15/(35+15)
f=10.5cm
This collects light, and bends it into focus.