Vikas TU
Last Activity: 4 Years ago
Acc to the question, Least count = 1 main scale division - 1 vernier scale division
= 1/2 - 29/60 = 1/60
Now the angle of the prism from the above data where
Main scale reading : 58.5 degree
Vernier scale reading : 09 divisions
= 58.5 + 9*(1/60) = 58.5 + 9/60 = 58.5 + 0.15 = 58.65 degree. (Ans)
Therefore, option C is correct