If W1, W2 and W3 represent the work done in moving a particle from A to B along three different paths 1, 2 and 3 respectively (as shown) in the
gravitational field of a point mass m, find the correct relation between
W1, W2 and W3.
Answer
(B)
W1 = W2 = W3
1
If nth divisions of the main scale coincide with (n+1)th divisions
of vernier scale. Given one main scale division is equal to 'a' units. Find the
least count of the vernier.
Answer
(A)
a/(n+1) units
2
A cube has a side of length 1.2 ✕ 10-2 m. Calculate its volume.
