You are provided three scales A, B and C as shown in Fig. 10.6 to measure a length of 10 cm.
For the correct measurement of the length you will use the scale
(a) A only
(b) B only.
(c) C only.
(d) Any of the three scales.
Length of 10 cm is available in all the three scales A, B and C. So, any of the three scales’ can be used.
Hence option (D) is correct.