# a disc has a hole. what will happen with the hole when we heat it .

• Dipasha
• 18 जुलाई
• 19 उत्तर

19 उत्तर
1-19 of  19
19 उत्तर
• radius will increase as r'=r(1+a∆t)
0

• increases
0

• hole size will increase
0

• size of the hole will increase towards outside and inside
0

• expansion takes place
0

• the diameter increases
0

• may be the answer be wrong bcz expansion is like photographic expansion do the hole size must increase...
1

• it will increase due to the photographic expansion
6

• size of the hole increased
0

• size of the hole will increase
4

• expand.
2

• size of hole will increase
3

• that hole expands outwards I.E-it's diameter increases
2

• so the hole size decrease
1

• size of hole increases ....it's expalined by linear expansivity...
0

• yes it will decrease as the disc will expand both inwards as well as outwards
1

• but the ans is that it will decrease
0

• Radius of hole increase with increase temperature...hence ultimately hole size increase..
1

• size of hole increases
-2

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