Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Two planets A and B of radii R and 1.5 R have densities  and <img alt="\frac{\rho}{2}" src="https://entrancecorne

Two planets A and B of radii R and 1.5 R have densities \rho and \frac{\rho}{2} respectively. The ratio of acceleration due to gravity at the surface of B to A is :

Option: 1

2 : 3 


Option: 2

2 : 1 


Option: 3

4 : 3 


Option: 4

3 : 4


Answers (1)

best_answer

\begin{aligned} & \mathrm{g}=\frac{\mathrm{GM}}{\mathrm{R}^2}=\frac{\mathrm{G} \times \frac{4}{3} \pi \mathrm{R}^3 \times \rho}{\mathrm{R}^2}=\frac{4}{3} \mathrm{G} \pi \mathrm{PR} \\ & \frac{\mathrm{g}_2}{\mathrm{~g}_1}=\frac{\mathrm{R}_2}{\mathrm{R}_1} \times \frac{\rho_2}{\rho_1}=1.5 \times \frac{1}{2}=\frac{3}{4} \end{aligned}

Posted by

Gautam harsolia

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2026: NTA directs non-Aadhaar applicants to submit photo verification certificate by January 7
anam-khan

Jharkhand CM inaugurates free coaching institute for tribal medical, engineering students
anam-khan

JEE Main 2026: IIT Roorkee’s ECE emerges as top choice after CSE; closing rank rises

Latest Question