A submarine, 400 m under water, spots an enemy helicopter which is actually flying 1 km above the water surface. If the helicopter is 5.0 m long, to the submarine observer, it appears to be
A 750 m above the water surface and 5.0 m long.
B 750 m above the water surface and 3.75 m long.
C 1.33 km above the water surface and 6.7 m long.
D 1.33 km above the water surface and 5.0 m long. A submarine, 400 m under water, spots an enemy helicopter which is actually flying 1 km above the water surface. If the helicopter is 5.0 m long, to the submarine observer, it appears to be
A 750 m above the water surface and 5.0 m long.
B 750 m above the water surface and 3.75 m long.
C 1.33 km above the water surface and 6.7 m long.
D 1.33 km above the water surface and 5.0 m long. @Physics

Question

A submarine, 400 m under water, spots an enemy helicopter which is actually flying 1 km above the water surface. If the helicopter is 5.0 m long, to the submarine observer, it appears to be
A 750 m above the water surface and 5.0 m long.
B 750 m above the water surface and 3.75 m long.
C 1.33 km above the water surface and 6.7 m long.
D 1.33 km above the water surface and 5.0 m long.  A submarine, 400 m under water, spots an enemy helicopter which is actually flying 1 km above the water surface. If the helicopter is 5.0 m long, to the submarine observer, it appears to be
A 750 m above the water surface and 5.0 m long.
B 750 m above the water surface and 3.75 m long.
C 1.33 km above the water surface and 6.7 m long.
D 1.33 km above the water surface and 5.0 m long.  @Physics

anonymous · Answer

refraction makes things inside water smaller. But i'm not sure if you're looking from inside water to air if the things gets bigger. If so i would say the answer is C. cause the chopper and also the distance seems bigger. But i'm not sure