Problem 2 You are scanning 4 inch x 5 inch physical photos t

Problem 2: You are scanning 4 inch x 5 inch physical photos to make digital images. In this exercise, the field of view is specified relative to the photo size rather than to the objects in the photo. A)f you want to scan the whole photo with 24 bits per color pixel at 2400 pixels per inch, how big will the image file be?B) if you want to scan the photo for use on a webpage that limits the width and height of the photo to a maximum of 800 pixels each, what is the maximum number of pixels per inch you can use? c) You are scanning your photo according to the limits specified in part (b), but you want to use the full 2400 pixels/inch resolution on a small area of your photo. What is the width of the maximum area you can scan at 800 pixelsinch and still meet the restrictions of (b)

Problem 3: You are driving on a highway at night and you notice that wheels on the car driving next to you appear stationary. A friend tells you this optical illusion is due to the fact that the sodium discharge lights illuminating the wheel flicker at 55 Hz, so what you see is the same as a video camera operating at a 55Hz framerate. If the car moves forward 1.2 meters for every rotation of the tire, and the wheels have 4 spokes, then how fast is the car moving?

Solution

many rotations are possible for particular frequency

fir difeerenet pixels