In the experiment of "Exploring the Imaging Rules of Convex Lenses": (1) From Figure A, we can see that the ______ of the convex lens is 15.00cm. (2) Before the experiment, place

(1) From the figure, the focal point is 15.00cm from the optical center, so the focal length of this convex lens is 15.00cm;

(2) When the object passes through the convex lens and becomes a real image, the image and the object It is located on the opposite side of the convex lens, so the convex lens must be placed in the middle of the other two components;

(3) It is known that the focal length of the convex lens is 15.00cm. To make the candle flame pass through the convex lens and form an inverted magnified real image, the candle should be in Between 30.00cm and 15.00cm, as shown in the picture, it needs to be at position c;

(4) The photographer found that there are students on both sides who have not entered the viewfinder, which means that the image taken is too big and should be allowed to If the image becomes smaller, the photographer must move the camera away from the classmate and increase the object distance to get a clear image on the film;

(5) The cause of myopia is that the lens is too thick and the refractive power is too large Strong, or the eyeball is too long in the front-to-back direction, so the light from a distant point converges in front of the retina. Using the characteristics of a concave lens to diffuse light, placing a concave lens in front of the eye can converge the light from distant objects. on the retina.

So the answer is:

(1) Focal length;

(2) Convex lens;

(3)c;

(4) Far away;

(5) Front; concave.