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Principle Ray II. Preliminary on the object side of the lens ray II heads toward the plane of the lens along a line that is parallel to the principle axis of the lens. At the plane of the lens it suddenly adopts a path that takes it directly away from the focal point that is on the same side of the lens as the object. If you outline that ray straight back the trace-back line passes through said focal point.
a pendulum is timed ,first for 20 swings and then for 50 swings ; time for 20 swings = 17.4 sec and time for 50 sec = 43.2. calculate the average time per swing/
A helium nucleus and a neon nucleus are separated by a distance of 3.0 nm. The charge of the helium nucleus is +2e while that of a neon nucleus is + 10e .Find the magnitude of the
Two straight, parallel, current carrying conductors are kept at a distance from each other, in air. The direction of present in both the conductors is the same. Find the magnitude
ways and rules of finding moment of force
Q. A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be 40°.What is t
why long jump run certain distance before running??
A FORCE OF 10I-3J+6K NEWTON ACTS ON A BODY OF 5KG AND IT DISPLACESFROM 6I+5J-3KMETRE TO 10I-2J+7K METRE. THE WORK DONE IS A)100J B)O C)121J D)NONE
A body of mass m1 , moving with velocity u1 collides head on with a body of mass m2 moving with a velocity u2 the two bodies stick together after the collision the loss of kinetic
Could the light along a side emitting optic be a totally homogeneous? Regardless of the assurances of several manufacturers, it is a total impossibility since it would clash wi
Can we take a negative test charge to find electric field?
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