conduct an experiment to find the focal length of concave mirror
Answers
Answer:
Sclerenchyma tissue, when mature, is composed of dead cells that have heavily thickened walls containing lignin and a high cellulose content (60%–80%), and serves the function of providing structural support in plants. Sclerenchyma cells possess two types of cell walls: primary and secondary walls.
Answer:
Hold a concave mirror perpendicular to the direction of sunlight.
Take a small paper and slowly move it in front of the mirror and find out the point where you get smallest and brightest spot.
This is the image of the sun.
The rays coming from sun parallel to the concave mirror are converging at a point.
This point is called focus or focal point (F) of the concave mirror.
Measure the distance of this spot from the pole of the mirror.
This distance is the focal length of the given concave mirror.
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