Definition
Report | Ranjita asks : An astronmical telescope has an objective of focal length 200 cm and an eyepiece of focal length 10 cm . An observer ajusts the distance of the eyepiece from the objective to obtain the image of the sun on a screen 40 cm behind the eyepiece. The diameter of the sun’s image is 6.0 cm .Find the diameter of the sun. The average earth-sun distance is 1.5x 1011 m. |
Report | Ganeshbabu mahesh asks : what is the image obtained by concave lensrn |
Report | Abhishek kumar asks : a concave mirror of radius r is kept on a horizontal table.water of r.i. xis poured into it upto a height H. WHERE SHOULD an object be placed so that its image is form on itself? |
Report | Vivek chotwani asks : what type of image form when plane mirror is broken into pieces |
Report | Divesh kukreja asks : The sun subtends an angle A radian at the pole of a concave mirror of focal length f. the diameter of the image of sun formed by mirror is |
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