Question

22. The mass of the object remains........
a) increases everywhere
b) same everywhere
c) decreases everywhere
d) None of the above​

Answer 1

Answer:

b same everywhere

Explanation:

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Answer 2

Answer:

(a) length of gap increases  AND  (c) the angle subtended by the gap at the center remains same

Explanation:

(a)Since expansion of a circular metal ring occurs tangentially and radially outwards therefore, if there is a gap in it then the length of the gap will increase.

(b) Radius increases on expansion

(c)Since rate of increase of gap and rate of increase in radius is same therefore, angle subtended by the gap remains same

(d)Length of the gap increases

Therefore, option(C) is correct