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Young's modulus of steel is 1.9xx10^(11)...

Young's modulus of steel is `1.9xx10^(11) N//m^2` When expressed is CGS units of `dy"nes"// cm^2` it will be equal to `(1N = 10^5dy"ne", 1 m^2 = 10^4 cm^2)`

A

`1.9xx10^(10)`

B

`1.9xx10^(11)`

C

`1.9xx10^(12)`

D

`1.9xx10^(13)`

Text Solution

Verified by Experts

The correct Answer is:
C
It is given that Young.s modulus (Y) is,
`Y=1.9xx10^(11)N//m^(2)`
`1N=10^(5)" dyne"`
So, `Y=1.9xx10^(11)xx10^(5)" dyne/m"^(2)`
`"Convert meter to centimeter "because" 1m = 100 cm"`
`Y=1.9xx10^(11)xx10^(5)" dyne/"(100)^(2)cm^(2)=1.9xx10^(12)"dyne/cm"^(2)`
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