Short trick: degrees of freedom, Cv, Cp and γ in 10 seconds
By Kumar Sir, Physics faculty at Pramana Institute (IIT Kanpur, 25 years teaching, ex-Allen) Every year, JEE Main and NEET ask at least one question that needs Cv, Cp or γ for a gas. Most students memorise a table of values, then panic when the question mixes two gases or says "linear triatomic". If you […]
Current electricity formula sheet for JEE and NEET
By Kumar Sir, Physics faculty at Pramana Institute (IIT Kanpur, 25 years teaching, ex-Allen) Current electricity is one of the highest-weightage Physics chapters in JEE Main, at about two questions a year by published counts. It also appears regularly in NEET and carries a big share of the Class 12 board paper. Most of its […]
Modern physics formula sheet for JEE and NEET
By Kumar Sir, Physics faculty at Pramana Institute (IIT Kanpur, 25 years teaching, ex-Allen) Modern physics is the most frequent Physics chapter in JEE Main by published 10-year counts, at about 2.4 questions a year. It is also one of the easiest: almost every question is a direct formula with one or two numbers. Learn […]