Question
Explain why.
There is fall in temperature with increase in altitude.

Answer

The temperature of atmosphere is due to the kinetic energy of air molecule.
Due to lower atmospheric pressure at higher altitude molecules of air rises up so their potential energy increase in turn the kinetic energy decrease results the decrease in temperature.
Due to lower atmospheric pressure at higher altitude the gas expands and gives cooling effect and so decrease the temperature.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A person looks at different trees in an open space with the following details. Arrange the trees in decreasing order of their apparent sizes.
Tree Height(m) Distance form the eye(m)
A 2.8 50
B 2.5 80
C 1.8 70
D 2.8 100
What causes variation in velocity of a particle?
A transformer has 50 turns in the primary and 100 in the secondary. If the primary is connected to a 220V DC supply, what will be the voltage across the secondary?
A dumb-bell consists of two identical small balls of mass $\frac{1}{2}\text{kg}$ each connected to the two ends of a 50cm long light rod. The dumb-bell is rotating about a fixed axis through the centre of the rod and perpendicular to it at an angular speed of 10rad/s. An impulsive force of average magnitude 5.0N acts on one of the masses in the direction of its velocity for 0.10s. Find the new angular velocity of the system.
Two wires of different densities but same area of crosssection are soldered together at one end and are stretched to a tension T. The velocity of a transverse wave in the first wire is double of that in the second wire. Find the ratio of the density of the first wire to that of the second wire.
The temperature and the relative humidity are 300K and 20% in a room of volume $50m^3$. The floor is washed with water, 500g of water sticking on the floor. Assuming no communication with the surrounding, find the relative humidity when the floor dries. The changes in temperature and pressure may be neglected. Saturation vapour pressure at 300K = 3.3kPa.
A particle goes in a circle of radius 2.0cm. A concave mirror of focal length 20cm is placed with its principal axis passing through the centre of the circle and perpendicular to its plane. The distance between the pole of the mirror and the centre of the circle is 30cm. Calculate the radius of the circle formed by the image.
  1. Describe a Carnot's cycle.
  2. A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in below figure. Its volume is then reduced to the original value from $E$ to $F$ by an isobaric process. Calculate the work done by the gas from $D$ to $E$ to $F$.
How will you find work done by a variable force? What is the significance of F-x graph?
A ball moving with a momentum of $15kg ms^{-1}$ strikes against the wall at an angle of $30°$ and is reflected with the same momentum at the same angle. Calculate impulse.