Give a method to determine the size of moon???This ques.was there in our UT test.......can u plz briefly explain it???

Asked by pnrohilla | 14th Oct, 2014, 05:26: PM

Expert Answer:

 

 

 begin mathsize 12px style Let space the space diameter space of space the space Moon space be comma space PQ space equals space straight D. space Suppose space that space an space astronomical space telescope space placed space at space point space straight R space on space the space surface space of space the space Earth space is space focused space on space the space Moon. space The space angle space subtended space by space the space ends space of space the space diameter space of space the space Moon space at space point space straight R space on space the space surface space of space the space Earth space is space measured space as space angle space PRQ space equals straight theta. space Suppose space that space the ‘ straight s ’ space is space the space distance space between space the space Moon space and space the space surface space of space the space Earth. space To space straight a space good space approximation space let space us space consider space the space diameter space of space the space Moon space as space an space arc space of space radius ‘ straight s ’. end style

begin mathsize 12px style The space value space of space straight D space can space be space calculated space by space knowing space the space value space of space straight s space and space straight theta. end style

Answered by Yashvanti Jain | 8th Dec, 2017, 06:45: PM