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рдкреНрд░рд╢реНрди
Yesh find out F1 and F2 of symmetric convex lens experimentally then which conclusion is true.
рдкрд░реНрдпрд╛рдп
a) ЁЭР╣1 = ЁЭР╣2
b) ЁЭР╣1 > ЁЭР╣2
c) ЁЭР╣1 < ЁЭР╣2
d) ЁЭР╣1 ≠ ЁЭР╣2
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рдЙрддреНрддрд░
a) ЁЭР╣1 = ЁЭР╣2
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(a)
(b)
(c)
(d)
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(b) 7 cm
(c) 20 cm
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