Underwater Led

A small underwater LED light illuminates the surface of the water 2 m directly above it. What is the radius of?

I think it's the circle of the surface of the water.

Discover Underwater Led On eBay Below:

Underwater Diving Flashlight 3x XPE UV LED Waterproof Torch 395nm 400nm T5Q8
Underwater Diving Flashlight 3x XPE UV LED Waterproof Torch 395nm 400nm T5Q8
$23.59
1000Lm Underwater Diving 50m Flash Light 10W XM L2 LED Flashlight LED Dive A3A1
1000Lm Underwater Diving 50m Flash Light 10W XM L2 LED Flashlight LED Dive A3A1
$12.27
1000 Lumen 10W XML L2 LED Diving Flashlight Torch light 20 50M Underwater E5D9
1000 Lumen 10W XML L2 LED Diving Flashlight Torch light 20 50M Underwater E5D9
$15.06
Underwater 100m 6000LM 3X XM L T6 LED Scuba Diving Flashlight Lamp Torch 18650
Underwater 100m 6000LM 3X XM L T6 LED Scuba Diving Flashlight Lamp Torch 18650
$17.09
Diving 20000LM 5xXML L2 LED SCUBA Underwater 100m Flashlight Torch Light 618650
Diving 20000LM 5xXML L2 LED SCUBA Underwater 100m Flashlight Torch Light 618650
$42.74
5000LM XML L2 LED Scuba Diving Underwater 500M Flashlight Torch Waterproof Set
5000LM XML L2 LED Scuba Diving Underwater 500M Flashlight Torch Waterproof Set
$12.97
Durable Hand Free Glove for Scuba Diving Underwater Torch LED Flashlight
Durable Hand Free Glove for Scuba Diving Underwater Torch LED Flashlight
$7.25
Underwater 6000 LM XM L2 LED 18650 26650 Diving Flashlight Torch 100m Lamp BZ
Underwater 6000 LM XM L2 LED 18650 26650 Diving Flashlight Torch 100m Lamp BZ
$13.98
KC Fire Scuba Torch 4xCree XM L2 LED Dive Flashlight Underwater Waterproof Lamp
KC Fire Scuba Torch 4xCree XM L2 LED Dive Flashlight Underwater Waterproof Lamp
$56.66
KC Fire UV Flashlight 3x UV LED Light 395nm Ultraviolet Lamp Underwater Torch
KC Fire UV Flashlight 3x UV LED Light 395nm Ultraviolet Lamp Underwater Torch
$41.66
Underwater 150m 10000LM 6x XM L2 LED Diving Scuba Flashlight Light Lamp Torches
Underwater 150m 10000LM 6x XM L2 LED Diving Scuba Flashlight Light Lamp Torches
$79.79
Underwater 200m 5000LM XM L2 LED Mini Diving Flashlight Torch Lamp Scuba Lights
Underwater 200m 5000LM XM L2 LED Mini Diving Flashlight Torch Lamp Scuba Lights
$20.69
Underwater 10000LM XM L2 LED Scuba Diving Flashlight Torch 26650 Battery Lamp US
Underwater 10000LM XM L2 LED Scuba Diving Flashlight Torch 26650 Battery Lamp US
$21.84
Diver Lamp 100M Underwater 6000LM 3x XM L T6 LED Scuba Diving Flashlight Torch
Diver Lamp 100M Underwater 6000LM 3x XM L T6 LED Scuba Diving Flashlight Torch
$36.66
Underwater 100m 10000LM 6x XM L L2 LED 18650 26650 Diving Scuba Flashlight Torch
Underwater 100m 10000LM 6x XM L L2 LED 18650 26650 Diving Scuba Flashlight Torch
$81.68
Archon WG46 Cree XM L2 U2 LED Underwater Diving Searchlight Flashlight Torch
Archon WG46 Cree XM L2 U2 LED Underwater Diving Searchlight Flashlight Torch
$299.00
LED Dive Flashlight Photography Light 100m Underwater Torch Lamp W Bracket Stand
LED Dive Flashlight Photography Light 100m Underwater Torch Lamp W Bracket Stand
$73.97
LED Diving Flashlight Photography Light 100m Underwater Waterproof Torch Lamp EB
LED Diving Flashlight Photography Light 100m Underwater Waterproof Torch Lamp EB
$68.89
Underwater 120M 395nm 3x XPE LED UV Light Scuba Diving Flashlight Torch+18650+CH
Underwater 120M 395nm 3x XPE LED UV Light Scuba Diving Flashlight Torch+18650+CH
$20.89
Underwater 150M Depth CREE XM LU2 LED Diving Scuba Flashlight Waterproof Torch
Underwater 150M Depth CREE XM LU2 LED Diving Scuba Flashlight Waterproof Torch
$44.01
10000LM 6xXM L2 LED Rechargeable Diving Flashlight Torch Underwater 150m 3x18650
10000LM 6xXM L2 LED Rechargeable Diving Flashlight Torch Underwater 150m 3x18650
$105.99
25000Lm 9x XM L2 LED Underwater 200m Scuba Diving Flashlight Torch 6x18650 Lamp
25000Lm 9x XM L2 LED Underwater 200m Scuba Diving Flashlight Torch 6x18650 Lamp
$47.10
Underwater 150m 10000lm 6x XM L2 LED SCUBA Diving Flashlight Torch Light+Bracket
Underwater 150m 10000lm 6x XM L2 LED SCUBA Diving Flashlight Torch Light+Bracket
$105.99
Archon D11V II 1200LM Cree LED Scuba Dive Light Underwater Video Flashlight
Archon D11V II 1200LM Cree LED Scuba Dive Light Underwater Video Flashlight
$59.95
Underwater 100M 395nm 3X XPE LED UV Light Scuba Diving Flashlight Torch+18650+CH
Underwater 100M 395nm 3X XPE LED UV Light Scuba Diving Flashlight Torch+18650+CH
$24.63
Underwater 20000 Lm 100M 3 x XM L T6 Diving Flashlight LED Waterproof Torch 3T6
Underwater 20000 Lm 100M 3 x XM L T6 Diving Flashlight LED Waterproof Torch 3T6
$24.99
Outdoor Scuba Diving Flashlight LED Waterproof Torch Underwater 50M Flashlight
Outdoor Scuba Diving Flashlight LED Waterproof Torch Underwater 50M Flashlight
$4.29
12000Lumen 5x XM L2 LED Diving Flashlight Torch Underwater 100M 18650 26650 Lamp
12000Lumen 5x XM L2 LED Diving Flashlight Torch Underwater 100M 18650 26650 Lamp
$35.71
Waterproof Scuba Diving Underwater LED Fill Light Mount Kit for Gopro 3+ 4 5 6
Waterproof Scuba Diving Underwater LED Fill Light Mount Kit for Gopro 3+ 4 5 6
$35.81
Waterproof Kangaroo Light Scuba Diving Underwater LED Mount for Gopro3+ 4 5 6
Waterproof Kangaroo Light Scuba Diving Underwater LED Mount for Gopro3+ 4 5 6
$35.81
Underwater 100m Diving 9000Lm 3x XML L2 LED Scuba Flashlight Torch Light 18650
Underwater 100m Diving 9000Lm 3x XML L2 LED Scuba Flashlight Torch Light 18650
$19.94
Underwater 100m Dive 10000LM XM L2 LED Scuba Diving Flashlight Torch 26650 Lamp
Underwater 100m Dive 10000LM XM L2 LED Scuba Diving Flashlight Torch 26650 Lamp
$20.89


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