Q.
A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of -0.004 cm the correct diameter of the ball is
see full answer
Start JEE / NEET / Foundation preparation at rupees 99/day !!
21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
0.521 cm
b
0.525 cm
c
0.053 cm
d
0.529 cm
answer is D.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
Diameter of the ball=MSR+CSR×( Least count )- Zero error =5 mm+25×0.001 cm-(-0.004)cm=0.5 cm+25×0.001 cm-(-0.004)cm=0.529 cm.
Watch 3-min video & get full concept clarity