Ncert Exercises & Solutions

Consider the following statements:

(A)	The diameter of a thread is so small that it cannot be measured using a meter scale.
(B)	In a screw gauge the least count decreases on increasing the number of divisions on the circular scale.
(C)	A large number of observations (say, 100) will give more reliable results than a smaller number of observations (say, 5).

Choose the correct option from the given ones:

1.	Only statements 1 and 2 are correct
2.	Only statements 2 and 3 are correct
3.	All three statements are correct
4.	Only statements 1 and 3 are correct