Task id16619
Seller: nerdmavr
Price: 0.15 USD
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Product description
The light source is located at a distance L = 1.5 m from the screen. Source luminous intensity I = 90 cd. In the middle between them there is a collecting lens with a focal length F = 30 cm (Fig.). Find the illumination in the center of the screen. Neglect light loss in the lens.
Additional information
Detailed solution. Format gif