Mark (√) against the correct answer in each of the following:

Question

Philoid · Accepted Answer

We know <img w='253' height='45' src='https://static.philoid.co/ncertusercontent/solutions/images/PROJ34910/1563454447649318.png' style='vertical-align: middle;'> <img w='254' height='45' src='https://static.philoid.co/ncertusercontent/solutions/images/PROJ34910/1563454448361458.png' style='vertical-align: middle;'>