Question

1. ____________

Explanation:

Step1: Identify the scale intervals

The scale ranges from 50 to 60 and there are 10 equal - spaced lines between 50 and 60. So the interval between each line is $\frac{60 - 50}{10}=1$.

Step2: Determine the liquid level reading

The meniscus of the liquid is at the 4th line above 50. So the reading is $50+4\times1 = 54$.

Answer:

54