Consider the following statements about atmosphere-
1. Temperature increase with increase in height in the troposphere.
2. Exosphere is divided into D.E.F.G Layers.
3. Temperature decreases with increasing height in mesosphere.
4. Over the equator, the temperature at tropopause is lowest while temperature over poles at tropopause is higher than that of over equator.
Choose the correct statements:
3 and 4 only
In troposphere temperature decrease with increasing height at 6.50 C/km which is known as normal lapse rate. Thermosphere and not the exosphere is divided into D.E.F.G layers. Third statement is correctly stated. Forth statements is also correct as the height of troposphere is 17km over equator and ~9-10km over poles our to relatively higher height over the equator, the temperature at tropopause is less over equator as compared to poles.