(a) A giant refracting telescope at an observatory has an objective lens of focal length 15 m. I...

[@piyushverma3139]

Sir why you have taken converging beam of light , as moon is very far .ie infinity, so the light from it should be parallel . Ans thus whole diagram will be changed

[@sarvdeepsingh3360]

Beautifully explained!

[@Jai_Shree_Ram____469]

Sir why we not used formula for leastdistanct vision

[@Sirik343]

Because moon humse bohut door h

[@phoenix3510]

@@Sirik343 lekin 1st question mein toh moon mentioned nhi hai? toh kaise pata chala ye

[@samarpreetsingh2180]

​@@phoenix3510telescope ke case mei agar q. Mei specifically mentioned na ho ki object kha per hai so we assume it to be at infinity

[@mahendrapalsingh8916]

Same question kaise pta kre ki lddv le ki infinity

[@girlwithstethoscope9180]

Thanks for uploading

[@krishvika17]

Thank you 😊

[@PositiveVibes1.1]

Thnku

[@nda3849]

Thnx sirji