Question

Determinati raza unei oglinzi concave stiind marirea liniara a acesteia β=-2 si distanta dintre imaginea formata d=20.

Answer 1

β[tex] \beta = \frac{y_{2} }{y_{1}}=-\frac{x_{2} }{x_{1}} \frac{1}{x_{2}} + \frac{1}{x_{2}}= \frac{1}{f}= \frac{2}{R} d=X-{1}-x_{2}[/tex]