What is the distance between two pixels called?

How do you measure distance between pixels?

How would you describe the term ‘pixel’?*1 pointA. A tiny square of colourB. A symbol that is used to represent an organisation or a productC. When an object or image is able to be made bigger or smallerD. A detailed image created with pixels

What is pixel?*1 pointelements of a digital imageelements of an analog imagecluster of a digital imagecluster of an analog imageOption 5

Same size of image is formed by a convex lens of focal length 20 cm . The distance betweenthe object and image is(a) 0 cm (b) 20 cm(c) 40 cm (d) 80 cm1

What is the smallest element of an image?pixeldpimetercentimeter