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Friday, 9 October

JEE Main 2017 · PhysicsMultiple choiceSingle correctEasyData or graph

JEE Main 2 April 2017 (offline), Physics Q7

Question 7 of 90 in this shift, Physics question 7 of 30.

The variation of acceleration due to gravity g with distance d from centre of the earth is best represented by (R = Earth's radius) :

The figure, in words

Four g vs d graphs; d=R marked with a dashed vertical line in options 2-4.
  1. (1)[figure: g vs d graph, curve rising from O with increasing slope (parabola-like), no R marked]
  2. (2)[figure: g vs d graph, g rises to a peak at d=R then decays as a curve for d>R]
  3. (3)[figure: g vs d graph, curve rising to a peak at d=R then falling in a straight line to zero]
  4. (4)[figure: g vs d graph, straight line rising from O to a peak at d=R then decaying curve for d>R]Official answer

Official answer

Option 4

CBSE answer key (25/04/2017, used for result).

Chapter
Gravitation
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA (CBSE ran the 2017 exam); answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.