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Enfant India International School. Ist unit test. Class-12th. . Sub-Physics

Question-1 Give the statement of Coulomb's law?(2) Question-2 Express Coulomb's law in vector form?(3) Question-3 Define Electric Dipole and Prove the formulae for Electric field on Dipole axis?(5) Question-4 Obtain an expression for Electric field on equitorial line of Electric dipole?(5) Question-5 What is quantization of Energy?(2) Question-6 Find out the no.of electrons in 2 Coulomb of Electric Charge?(3) Question-7 Explain the drawbacks of Rutherford's model?(3) Question-8 Explain Bohr's model?(5) Question-9 Write down a reaction for Neuclear fission?(2) Question-10 Explain Soddy Fazan's group displacement law?(3) Question-11 find the time in which Radium will undecayed 25% of it's original mass?(3) Question-12 find the no.of alpha and beta particles emitted when 92U236 gets converted into 82Pb206?(4)
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Enfant India International School. Ist unit test. Class-11th. Subject-Physics. . M.marks-40

Question.1 Write down the drawbacks of dimensional analysis method?(3) Question.2 In Vanderwall's gas equation find the dimension of a and b? (3) Question-3 find the dimensions of  a.Stokes Constant b.Boltzmann's constant c.Gas constant. d.Universal Gravitational constant e.Young's modulus (10) Question-4 if v=a+bt+c/d+t is the velocity time equation then find the dimensions of a,b,c and d.(4) Question.5 Convert 1 joule into erg.(3) Question.6 Convert 1 Newton into Dyne (3) Question.7 By Dimensional analysis method check the correctness of all the equations of Newton?(4) Question.8 Prove that for a freely falling body the equation h=1/2 gt is incorrect and establish the correct equation?(6) Question-9 Establish by dimensional analysis method the formula for Centripetal force?(4)
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Enfant India International School. First Unit test .. Class-10th. Subject-Physics. M.marks-40

Question 1 Explain why Gravitational force is non contact?(3) Question 2 Is Frictional Force a Contact force?Explain why?(2) Question 3 Prove Work Energy Theorem?(3) Question 4 Prove that Power=Force×velocity?(2) Question 5 Prove that for a freely falling body mechanical energy remains constant?(5) Question 6 Define Refraction and Explain why does it happen?(3) Question 7 Explain why refractive index is unitless?(2) Question 8 Explain the energy transformation in 1.Transistor 2.Torch 3.Electric iron (6) Question 9 Explain Soddy Fazan's group displacement law?(4) Question 10 What do you mean by half life time?(3) Question 11 Difference between Nueclear Fission and Fusion?(3) Question 12 How much time Radium will take to remain 25% of original mass if it's half life is 10 years?(4)
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Enfant India International School. Sub-Physics. M.marks-20

Question-1 find the units of following physical quantities?(5) a.Momentum b.speed.  c.acceleration d.Force  e.Work.           Question-2 Define the following terms a.Acceleration b.Retardation c.Force (3) Question-3 Convert 1 Angstrom into Micron (4) Question-4  Find the distance between the space and earth if a signal reaches on earth with the speed of light in 5 minutes?(4) Question-5 Prove all three equations of motion?(4)
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Enfant India International School. Class test. Sub-Physics. M.marks-20

Question.1 Give two examples of each 1.Contact force.      2.Non Contact Force (2).                                                               Question.2 State and prove Work Energy Theorem?  (3) Question.3 Establish the relationship between Force and Power?(3) Question.4 Define Centre of gravity with example?(2) Question.5 Convert 1 kwh into joule?(3) Question.6 Explain why work is a scalar quantity?(2) Question.7 Prove that for a freely falling body mechanical energy remains constant?(5)
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