Question:

Match List I with List II
List IList II
A.TroposphereI.Approximate 65-75 km over Earth’s surface
B.E- Part of StratosphereII.Approximate 300 km over Earth’s surface
C.F2- Part of ThermosphereIII.Approximate 10 km over Earth’s surface
D.D- Part of StratosphereIV.Approximate 100 km over Earth’s surface
Choose the correct answer from the options given below:

Updated On: Mar 19, 2025
  • A-III, B-IV, C-II, D-I
  • A-I, B-II, C-IV, D-III
  • A-III, B-II, C-I, D-IV
  • A-I, B-IV, C-III, D-II
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The Correct Option is A

Solution and Explanation

For each layer of Earth's atmosphere, the typical altitudes are as follows:
Troposphere: The troposphere extends up to approximately 10 km, so the correct match is \( A \rightarrow III \). 
E-Part of Stratosphere: This part of the stratosphere reaches up to about 50 km. Considering the general range, the match is \( B \rightarrow IV \).
F\(_2\)-Part of Thermosphere: The F\(_2\)-layer of the thermosphere can extend as high as 300 km, resulting in the match \( C \rightarrow II \). 
D-Part of Stratosphere: The D-part of the stratosphere reaches about 50 km, so the match is \( D \rightarrow I \). 

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Concepts Used:

Gravitation

In mechanics, the universal force of attraction acting between all matter is known as Gravity, also called gravitation, . It is the weakest known force in nature.

Newton’s Law of Gravitation

According to Newton’s law of gravitation, “Every particle in the universe attracts every other particle with a force whose magnitude is,

  • F ∝ (M1M2) . . . . (1)
  • (F ∝ 1/r2) . . . . (2)

On combining equations (1) and (2) we get,

F ∝ M1M2/r2

F = G × [M1M2]/r2 . . . . (7)

Or, f(r) = GM1M2/r2

The dimension formula of G is [M-1L3T-2].