wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Satellites orbiting the earth have finite life and sometimes debris of satellites fall to the earth. This is because,


A

the solar cells and batteries in satellites run out.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

of viscous forces causing the speed of satellite and hence height to gradually decrease.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

the laws of gravitation predict a trajectory spiralling inwards.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

of collisions with other satellites

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B

of viscous forces causing the speed of satellite and hence height to gradually decrease.


As the total energy of the earth satellite of radius R bounded system is negative (-GM\2 a) where M is mass of the earth and a is the radius of satellite.

Due to the viscous force acting on satellite, energy decreases continuously and radius of the orbit or height decreases gradually.

Final Answer:(c)


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon