Sir i have a strong desire to participate inNATIONAL STANDARD EXAMINATION PHYSICS IN CLASS 10 ITSELF.suggest me some reference books and study tips to crack the exam in first attempt

@ swapnil 
national standard examination will be conducted by IAPT IN various subject like physics , chemistry and biology , maths etc . 
for that u need to have a good grasp of class 9^th and 10^th physics mainly .. 
frst of all read your ncert , as the question setter comitee have decided the syllabus of that test to be from ncert books , after doing that there are books avaliable of MTG publication for NTSE preparation , go for the practice of that , and also there is a book of NSE physics by mtg , 
after that choose the previous year paper and practice that , 
then L;AST but not the least , read some recent physics invention like gravitational waves etc . they will also come in that exam . 
the recommended book is s.chand physics and pradeep physics , 
u can also refer to the askiitian study material and self study package . 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST ..