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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
Hysteresis loss in soft iron is less then that in steel.
b
Retentivity of soft iron is less then the retentivity of steel.
c
Coercivity of soft iron is less than the coercivity of steel
d
Both 1 and 3 are correct.
answer is D.
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