Consider the following statements and identify the correct answer using the codes given below:
1) The rate of change of pressure over distance is called pressure gradient.
2) The isobars are lines joining places of equal pressure.
3) When isobars are spaced apart the pressure gradient is steeper.
1
1, 2 and 3 are correct
2
1 and 3 are correct
3
1 and 2 are correct
4
2 and 3 are correct