Aqa A Level Physics Paper 1 Exam Questions And Detailed Answers| Accurate Actual Exam With Frequently Tested Questions

AQA A LEVEL PHYSICS PAPER 1 EXAM QUESTIONS AND DETAILED ANSWERS| ACCURATE ACTUAL EXAM WITH FREQUENTLY TESTED QUESTIONS Longitudinal - AnswerParticle vibration is parallel to the direction of wave propagation Transverse - AnswerParticle vibration is perpendicular to the direction of propagation Scalar - Answera quantity having only magnitude, not direction Vector - AnswerA quantity with both magnitude and direction principle of moments - AnswerWhen a system is in equilibrium the sum of anticlockwise moments about a point equals the sum of the clockwise moments about the same point Centre of gravity - AnswerThe single point within a body at which the entire weight of the body is considered to act Terminal Velocity - AnswerThe constant, maximum velocity of an object when the resistive forces on it are equal and opposite to the accelerating forces Hooke's Law - AnswerThe tension in a spring or wire is proportional to its extension from its natural length, provided the extension is not too great (before elastic deformation) Spring Constant - AnswerA characteristic of a spring which is defined as the ratio of the force affecting the spring to the displacement caused by it Tensile Stress - Answerthe force per unit cross-sectional area when equal opposing forces act on a body. UNIT: Pa or Nm^-2. moment - AnswerThe turning effect of a force about a point is defined as the force x the perpendicular distance from the point to the line of action of the force UNIT: Nm Tensile Strain - Answerextension per unit length (no unit) Young Modulus - AnswerE=tensile stress/tensile strain (for hooke's law region) Amplitude - Answerthe maximum extent of a vibration or oscillation, measured from the position of equilibrium Wavelength - Answerdistance between a point on one wave and the same point on the next wave Frequency - Answerthe number of waves produced by a source each second superposition - Answerwhen two or more waves occupy the same region then the total displacement at any one point is the vector sum of their individual displacements at that point Coherence - AnswerWaves or wave sources, which have a constant phase difference between them and a similar frequency