yet my physics is not completed by me..can you please suggest that which chapter require major concentration..??

I would suggest you to go through below chapter -

Mechanical Properties of Solids and Fluids
Current Electricity
Dual Nature of Radiation and Matter
Moving Charges and Magnetism
Thermodynamics
System of Particles and Rotational Motion
Work, Energy and Power
Motion in a Plane
Ray Optics and Optical Instruments
Wave Optics
Thermal Properties of Matter and Kinetic Theory
Atoms
Oscillations
Gravitation
Motion in a Straight Line
Alternating Current
Waves
Electric Charges and Fields
Electrostatic Potential and Capacitance
Semiconductor Electronics: Materials, Devices and Simple Circuits
Laws of Motion

Hope this helps!!!