The book is widely used in Indian academic circles, and it's possible to find a downloadable PDF version online. However, I must advise you that downloading copyrighted materials without permission might be against the terms of service of some websites or even illegal.
If you're a student, you may want to consider purchasing the book or checking with your institution's library to see if they have a copy.
Please be aware that downloading copyrighted materials without permission can be considered piracy. Make sure you have the author's or publisher's permission to download or access the PDF version.
You're looking for a downloadable PDF of "Physical Geography" by Savindra Singh. Here's what I found: