SATHEE: Physics Elasticity Question 133

Physics Elasticity Question 133

Question: To keep constant time, watches are fitted with balance wheel made of

[EAMCET 1994]

Options:

A) Invar

B) Stainless steel

C) Tungsten

D) Platinum

Show Answer

Answer:

Correct Answer: A

Solution:

Because dimension of invar does not varies with temperature.

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Physics Elasticity Question 133

Question: To keep constant time, watches are fitted with balance wheel made of

Options:

Answer:

Solution:

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