Hi Bhanushree,

The important topics for JEE, BITSAT and EAMCET 2020 are as follows:-

@Physics

• Heat and Thermodynamics - 10% Weightage
• Magnetic Effect of Current - 10% Weightage
• Simple Harmonic Motion
• Wave Motion
• Current Electricity
• Wave Optics
• Fluids
• Electrostatics
• Rotational motion

@Chemistry

• Chemical Bonding - 10% Weightage
• Organic ChemistryElectrochemistry - 10% Weightage
• p-Block elements
• Atomic Structure
• Alkanes, Alkenes and Alkynes
• Carboxylic Acid and Derivatives and Mole concepts
• Biomolecules
• Chemical Thermodynamics

@Mathematics

• Circles - 10% Weightage
• Trigonometry - 10% Weightage
• Vectors
• Straight Lines and a Pair of Straight Lines
• Continuity and Differentiability

You may refer to this article for more information about JEE Main Important topics.

You may refer to this article for more information about BITSAT Important topics.

You may refer to this article for more information about AP EAMCET Important topics.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!