Question

Data
p=10cm
q=20cm
F??
Formula 1/F=1/p+1/q
a)6.66cm
b) 20 cm ​

Answer 1

Answer:

Data

p=10cm

q=20cm

F??

Formula 1/F=1/p+1/q

a)6.66cm

b) 20 cm

Answer 2

Answer:

F = 20/3

Explanation:

1/p= (1/10), 1/q=(1/20)

1/F = (1/10) + (1/20)

1/F = (2 + 1)/20

1/F = 3/20

F = 20/3