Question

Two boys one 52 inches tall and the other 55 inches tall, are standing at distances 4.0 m and 5.0 m respectivley from an eye. Which boy will taller?

Answer 1

The angle subtended by the first boy on the eye is
`alpha_1=(52 inch)/(4.0 m)=13 inch/m`
and the angle subtended by the second boy is
`alpha_2=(55inch)/(5.0m)=11 inch/m `
As `alpha_1gtalpha_2` the first by wil look taller to the eye