次数

变量

1

2

3

4

5

6

7

8

9

10

L/cm

63.35

66.00

67.50

68.70

70.00

72.50

75.00

76.00

80.00

84.90

l/cm

15.25

20.61

22.78

24.62

26.92

30.02

34.76

35.04

40.13

46.25

焦距/cm

14.92

14.89

14.95

14.97

14.92

15.02

14.95

14.96

14.97

14.93