An Experimental Practical Note Book on Physics

Vernier Calliper




Screw Gauge




Angle Iron




(1)

,Free Fall Apparatus




Atwood’s Machine




(2)

,Metre Rule with Wooden Wedge, String, Weight Box




Helical Spring with Stand




Physical Balance




(3)

, Experiment No. 1
Measure the area of cross section
of a solid cylinder by measuring
the diameter with vernier callipers
Question related to this experiment:
Q.No.1: (D.G. Khan A-2013,G-II)
Apply zero correction on a cylinder of diameter 0.81cm measured by a
vernier callipers having positive zero error 0.02cm. Find corrected diameter
of cylinder.
Solution:
In order to get exact measurement, positive zero error is subtracted from the total
reading.
Corrected diameter = given diameter – positive zero error
Corrected diameter = 0.81cm – 0.02cm
Corrected diameter = 0.79cm
Q.No.2: (Bahawalpur A-2013,G-I)
Apply zero correction on a cylinder of diameter 0.65cm measured by a
vernier callipers having positive zero error 0.03cm. Find corrected diameter
of cylinder.
Solution:
In order to get exact measurement, positive zero error is subtracted from the total
reading.
Corrected diameter = given diameter – positive zero error
Corrected diameter = 0.65cm – 0.03cm
Corrected diameter = 0.62cm
Q.No.3: (Bahawalpur A-2013 G-II, A-2014 G-I)
Apply zero correction on a cylinder of diameter 0.8cm measured by a vernier
callipers having positive zero error 0.01cm. Find corrected diameter of
cylinder.
Solution:
In order to get exact measurement, positive zero error is subtracted from the total
reading.
Corrected diameter = given diameter – positive zero error
Corrected diameter = 0.8cm – 0.01cm
Corrected diameter = 0.79cm

(4)