Questions
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
detailed solution
Correct option is D
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.Similar Questions
A man moves from home to market which is at a distance of 2 km with a speed of 3 kmph. Finding the market closed he instantly returns home with a speed 6 kmph. The average velocity of the man in the total journey is
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