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JEE Advanced 2020 Concept Recapitulation Test 2 Paper 2

Answer the following by appropriately matching the list based on the information given in the paragraph.
Consider a planet of radius R having density ρ. The four tunnels (1,2,3 and 4) are dug side at the distances from its centre are r=0,r=‌

,r=‌

√2

and r=‌

R√3

respectively as shown. Four objects each of mass 1kg are dropped inside the tunnel from the surface of plant at t=0.

List - I

List - II

(I) Tunnel '1'

(P) 0

(II) Tunnel '2'

(Q) ‌

2πGpR

(III) Tunnel '3'

(R) ‌

2√2πGρR

(IV) Tunnel '4'

(S) ‌

2πGρR

√3

(T) ‌

4πGρ

Question : 11

Total: 54

The normal reaction between objects and mid of tunnels, the correct match is

I→P,II→Q,III→R,IV→S
I→S,II→R,III→Q,IV→P
I→Q,II→P,III→R,IV→S
I→P,II→Q,III→S,IV→R

Validate

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