THIS TEST CONTAINS 7 NUMBER OF QUESTIONS EACH OF 5 MARKS . TOTAL MARKS OF THE TEST IS 35 AND REQUIRED TIME IS 1 HOUR 30 MINUTES.
YOU CAN WRITE THE ANSWER IN A PAPER. AFTER COMPLETION OF TEST WITHIN THE GIVEN TIME, TAKE IMAGE OF YOUR ANSWER AND CONVERT IT IN PDF FILE (NOT IN FOLDER) AND UPLOAD THE FILE BEFORE FINISH THE TEST. THERE ARE EIGHT PLACE TO UPLOAD FILE. YOU CAN UPLOAD FILES FOR EACH QUESTION SEPARATELY OR UPLOAD ALL THE ANSWERS IN A SINGLE FILE. YOU WILL GET A MESSAGE ON THE SCREE WHEN YOUR FILE WAS SUCCESSFULLY UPLOADED.
FOR THIS PURPOSE YOU WILL GET 15 MINUTES EXTRA. THEREFORE TOTAL TIME OF YOUR TEST IS 1 HOUR 45 MINUTES.
ALL THE PROCESS YOU HAVE TO COMPLETE WITH IN THE GIVEN TIME. THEN CLICK ‘FINISH QUIZ’ BUTTON.
RESULT PAGE WILL COME AND YOU CAN DOWNLOAD THE DERIVED ANSWER OF THIS TEST WITH QUESTION PAPER BY CLICK THE LINK ON RESULT PAGE.
YOUR COPY WILL BE EVALUATED AND WILL BE POSTED ON YOUR DASHBOARD – PROFILE – THE FOLLOWING TEST YOU HAVE GIVEN – ELECTROSTATICS (PEN PAPER TEST) – VIEW.
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1. If the momentum of a body is increased by 2 times then what is the increase in kinetic energy? State and prove work energy theorem. (2+3)
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2. Define no work force and give one example of it. Define kinetic energy and derive its expression. (2+3)
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3. Prove that the mechanical energy is conserved for freely falling body. Two bodies of different masses have the same kinetic energy. Which one have the greater momentum? Explain. (3+2)
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4. A body of mass 0.5 kg travels in a straight line with velocity v = ax^{3/2} where a = 5 m^{ -1/2}s^{ -1}. What is the work done by the net force during its displacement from x = 1 m to x = 4 m? A body is freely falling from a height h. What is the kinetic energy of it at a height from ground? (3+2)
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5. If power of a body is constant then find the relation between distance and time. If the speed of a body of mass 2 kg increases from 36 kmh^{-1} to 72 kmh^{-1} then calculate the work done on the body. (3+2)
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6. If two bulbs of 100 watt is used for 6 hour per day then calculate the electric energy (in BOT) consumed for 30 days. A body of mass 2m is moving with speed u and stuck with a body with mass m which is at rest. What is the loss of kinetic energy of the 2m? (2+3)
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7. What work is done by a weight lifter when he holds a weight over his head? Two boys are playing with a ball within a railway compartment, should the kinetic energy of the ball depend on the constant velocity of the train? Explain. A man carrying a bucket of water stands on a lift which is ascending with uniform velocity. Explain (i) whether the man is doing any work on the bucket and (ii) whether the energy of the bucket remain unchanged? Explain. (1+2+2)
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