Practical Physics Experiment PDF

Experiment Definitions Laws request unit range 1- Stress is the external force (F) acting on an object per unit extension cm/gm ≤1 Verifying cross-sectional area (A). ∆𝑳 = 𝒏...

Experiment Definitions Laws request unit range 1- Stress is the external force (F) acting on an object per unit extension cm/gm ≤1 Verifying cross-sectional area (A). ∆𝑳 = 𝒏 𝑴 per unit Hook's 𝑭 mass of 𝑺𝒕𝒓𝒆𝒔𝒔 = Law 𝑨 the load Strain is the change in length per unit length that a (n) material undergoes when a force is applied to it. ∆𝑳 𝑺𝒕𝒓𝒂𝒊𝒏 = 𝑳𝟎 Strain is a measure of the degree of deformation. Conclusion: If the graph is a straight line, then the extension of the spring is directly proportional to the tension in the spring, which verifies Hook's law. Experiment Definitions Laws request unit range cm 2-Determination of surface Surface tension is the 𝑀𝑔 Drop radius (r) 0.10 - tension (by drop weight unbalanced force acting on the = 3.8𝑟𝛾 0.2 method) free surface of a liquid tending to reduce the surface area to minimum. Factors affecting surface tension: 1. Nature of the liquid molecules. 2. Temperature: It decreases as temperature rises. 3. Chemical impurities. ……………… are compounds that lower the surface tension. Surface tension Experiment Definitions Laws request unit range 3- Determination of ∆ℎ Bending's modulus (or Dyne/cm2 …X1012 the Bending's 𝑔𝐿3 Flexural modulus) Modulus = 𝑚 4𝑏𝑑 3 𝐸𝐵 Experiment Definitions Laws request unit range 4- Sound Speed of sound in cm/sec 30000- Determination Is a longitudinal wave consists of 𝐋 air (V) 40000 of speed of compressions and relaxations. 𝐕 𝟏 = ( ) − 𝟎. 𝟔𝐑 Sound in air 𝟒 𝐟 cm 1.5 Standing waves consists of nodes Radius of the tube and anti-node. (R) In the speed of sound experiment, the intersection in the (L –axis) equal to ………..