Q. Name the two types of spherical mirror. What type of mirror is represented by the: (a) backside of a shining steel spoon? (b) front side of a shining steel spoon
Q. A person holds a bundle of hay over his head for 30 minutes and gets tired. Has he done some work or not? Justify your answer.
Q. Why is LiF almost insoluble in water whereas LiCl is soluble not only in water but also in acetone?