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ISC Class Prelims 2021 : Physics (Bishop Cotton Girls School (BCGS), Bangalore)

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Bishop Cotton Girls' School (BCGS), Bangalore
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BISHOP COTTON GIRLS SCHOOL SCHOOL FIRST TERM EXAMINATION [ONLINE] Std XI PHYSICS 11-01-2021 Marks :70 Reading time:10min Writing time: 3Hrs Candidates are allowed additional 20 minutes for uploading the paper. Answer sheets should be uploaded as a single PDF only in assignments Name your PDF [ name subject] Answer all the questions Section A Question 1 Choose the correct alternative: [5] 1. Which of the following physical quantities is not represented by the dimensional formula [M 0L0T-1] ? a) Strain b) Angular velocity c) Frequency d) velocity gradient 2. The component r of a vector along the X axis will have maximum value if : a) r is along the +ve Y axis b) r is along the +ve X axis 0 b) r makes an angle of 45 with the X axis d) r is along the -ve Y axis 3. During inelastic collision between two bodies which of the following quantities always remains a constant? a) total kinetic energy b) total mechanical energy b) total linear momentum d) speed of each body 4. Two spheres of masses m and M are situated in air and the gravitational force between them is F. If the space around the masses is now filled with a liquid of relative density 3, the gravitational force between them will be : a)3F b) F c) F/3 d) F/9 5. A missile is launched with a velocity less than escape velocity. The sum of its kinetic and potential energies will be: a) positive b) negative c) zero d) may be positive or negative

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