Question

Mass of an object on moon will be
(A) One sixth of its value on earth
(B) Ten times its value on earth
(C) Six times its value on earth
(D) Same as on earth

Answer 1

Mass can be defined as the quantity of matter in a body. The quantity of matter (like the number of particles) is independent of location of the body.

Complete answer:
Generally, the mass of a body is defined as the amount or quantity of matter contained in a body. This is a physical property of the body and thus dependent on the body itself, not its location, orientation, or any other situations which would not change the properties of the body itself. The mass in itself is one of the fundamental quantities of nature. This means that it is un-derived from other quantities and instead other quantities are derived from it.
Hence, the mass of a body cannot be manipulated by any external influence for as long as the body itself is not disintegrated or part of it removed. For example, if I have a chunk of metal weighing a particular mass, no matter what I do to that chunk of metal, such as bending it, beating it, changing its location or any other imaginable thing, the mass of the chunk will not change. The only thing which would change the mass of the chunk is if another chunk was merged with it. But then it would no longer be the same chunk of metal.
Hence, we can conclude that even on the moon, the mass of a substance wouldn’t change as when it is on earth.

Hence, the correct option is D.

Note: However, for clarity, note that by definition, the mass of a substance is not an intrinsic (or intensive) property. An intensive property is one which does not depend on the amount of substance, while extensive changes with amount. The mass of a substance changes when you add another substance to it (changing the amount), and hence is not an intrinsic property.