Please solve the following:- { Choose the correct}
(The first one is this and solve the other by attachment)
1. When a bimetallic strip (brass and invar) is heated :
[tex](a) it \: remains \: straight \\ (b) \: it \: bents \: with \: brass \: on \: convex \: side \\ (c) \: it \: bends \: with \: invar \: on \: convex \: side \\ (d) \: it \: does \: not \: have \: a \: definite \: shape[/tex]
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Explanation:
2.pendulum clock
3.three types
4. Oringinal suface area of the body