This book as a whole, is the collection of unpublished research papers in different aspects on Physics, claiming that there are serious errors in the foundational level of physics. In general, this book is dedicated to redefine and reform the whole basic concepts in main stream Physics like Classical Mechanics, Quantum Mechanics, Electromagnetism and other correlated areas those get influenced through such reforms. By series of different thought experiments and more practicable methods with comments on existed laws and principles, the book as a whole redefines and gives new pillars to erect the new foundations of Modern Physics. The outline of the book: Chapter one deals with the derivation of tangential acceleration being based on unit vectors existed within the uniform magnitude of velocity in circular motion beside the radial or centripetal acceleration. Chapter two deals with full explanation and derivation of a different relative way of force measuring formula (showing Newton's First and Second Laws completely wrong) being based on resolution of vectors with the aid of consequential effects exposed in chapter one, within gravitational field. Also, the inertial force, which Newton had assumed in perfect empty space (in absence of gravitational field), is proved just a fictitious which has no real existence. It takes account of how we are wrong in different aspects of Mechanics within the classical context. Importantly, there is verification of centrifugal force. Chapter three deals with why we can't measure inertial force in absence of gravitational field (for particle of mass nature) and the chapter four deals with straight forward derivation of force measuring formula within the gravitational field respectively, but both chapters as a bit summary type and quite extensive forms of chapter two. Chapter five explains about the reality on rocket propulsion with extension of third law of motion. Chapter six identifies the collision angle for the first time in collision between two particles in Laboratory frame of reference with formulation. Chapter seven deals with draw backs in Millikan Oil drop experiment such that there can't be quantisation of charges; the specific charge (e/m) actually has no existence and discussion in other related areas. Chapter eight has some terrific explanations about the Maxwell's equations in vacuum about concreteness on different parameters though; they should diminish in actual sense. Chapter nine shows how it is wrong in assumption of permittivity and so the derivation of displacement vector in Ampere-Maxwell's equation, giving the correct derivations and different forms of such displacement vector through the two way methods expressed by two sides (LHS and RHS) of the equation denoted by D=eE. Chapter ten solves the problem of interference patterns observed in double-slit experiment alternatively, without the use of wavy and probabilistic view of photons' motion, rather with the particle view through elementary classical tendency by the modification of set theory to describe the observed patterns.