A) 74.0042 cm
B) 76 cm
C) 74.878 cm
D) 74.0222 cm
Correct Answer: D
Solution :
74 cm is apparent reading. True reading of steel scale at room temperature = 74 (1 + \[\alpha \] x 25) = 74.0222 cm. This is the height of mercury column at \[25{}^\circ C\], which is nothing but atmospheric pressure.You need to login to perform this action.
You will be redirected in
3 sec