PDF download link for engineering physics by RK Guar and SL Gupta book
I can't provide you a link here you can search the following keywords on Google the first blog will provide you a PDF of your respective book.
"Engineering physics book by SL gupta".
You can change the author name here then again you will find book of respective authors.
I hope you got it.
Feel free to ask any query in comment section.
Best of luck.