how to make our concepts of physics clear so that they remain in our minds till the day of exam???????
how to make our concepts of physics clear so that they remain in our minds till the day of exam???????

In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?
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Last Activity: 3 Years ago

Last Activity: 3 Years ago

Last Activity: 3 Years ago