Question

A transparent cube of 0.21 m edge contains a small air bubble. Its apparent distance when viewed through one face of cube is 0.1 m and viewed from opposite face is .04 m. The actual distance of the bubble from the second face of the cube is –

• A. .06 m
• B. .17 m
• C. .05 m
• D. .04 m

Answer 1

Answer: (A)

.06 m

Answer 2

m = $\frac { \text { Real distance } } { \text { Apparent distance } }$

= $\frac { \mathrm { x } } { .04 }$

\ x = .06 m