Projectile Motion : Practice Problems + Solutions


Solve the following questions using what you know about projectile motion. 1.       A roadrunner runs directly off a cliff with an initial velocity of …
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Chapter 6: Work and Energy


Chapter 6: Work and Energy
Practice Problems 1 Just as a car tops a  38 meter high hill with a speed of  80 km/h it runs out of g…
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Chapter #10 :Geometrical Optics : Short Q/A / C.R.Q's


Q.Why do thick lenses possess chromatic and spherical aberrations? Suggest remedies for the rectification of these defects. Ans.Chromatic aberration oc…
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Chapter #9 :Nature of Light ( Physical Optics) : Short Q/A / C.R.Q's


Chapter #9 :Nature of Light ( Physical Optics) : Short Q/A / C.R.Q's
Q.Why the central spot in the Newton’s rings is dark? Ans. The Newton’s rings are formed due to the phenomenon of thin film interference. here, the con…
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Chapter #8 :Waves and Sound : Short Q/A / C.R.Q's


Q. If a pendulum is vibrated at a deep well .What will be the effect on the Time Period? Ans. As we know that g decreases with the depth.            …
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