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- Ch. 5 # 52 . Please see attached images for Physics question . Thank you .A student from Sugar Land cannot see objects clearly that are farther than 41.1 cm from her eyes. What power of contact lenses should she wear to drive safely on US Highway 69? (State exact answer in diopters with correct sign and with 2 digits right of decimal. Do not include unit in answer.)The exposure index EI for a 35 millimeter camera is a measurement of the amount of light that hits the film. It is determined by the equation EI = log2 (16/2) where f is the "f-stop" setting on the camera, and t is the exposure time in seconds. Suppose the f-stop setting is 4 and the desired exposure time is 2 seconds. What will the resulting exposure index be EI=___