"Shadow" is a common phenomenon in our daily life. The corresponding relationship between "shadow" and physical knowledge listed below is correct () A. Photography-Ping

A, photography is to use the convex lens to reverse the image, restore and be true, and the lens uses the refraction principle of light, so A is wrong;

B, the hand shadow is a shadow. When light travels along a straight line, it encounters an opaque object, and the dark area behind the object is called a shadow, so B is correct;

B, reflection is plane mirror imaging, and the calm water surface is equivalent to a plane mirror. Its principle is the reflection of light, so C is wrong;

C, using a convex lens to invert, enlarge and be true is based on the refraction principle of light, so d is wrong;

So choose B.