What is magnetic field???
List its properties!! ​

Anshul, Abir and Saksham are close friends who have recently completed their studies. When they meet their teacher Mr. Gaurav he enquires from each one of them about their career plans. But none of them has a definite reply Mr. Gaurav suggests to them that they can opt for business as a promising and challenging career. Saksham got excited by the idea and says -Yes, business is really good for making lots of money even more than what is possible by becoming a manager. Do you agree that business is meant only for minting money? Give two reasons supporting your answer

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.