1. Fix the head of the strong light flashlight with your left hand and turn the battery compartment cover of the flashlight with your right hand.
2. After unscrewing the back cover of the battery compartment, you can see the battery inside.
3. Then, press and hold the strong light flashlight with your left hand and rotate the battery compartment.
4. In this way, the battery compartment body is dismantled.
5. Then press the tail of the flashlight with your right hand and turn the lamp cover clockwise with your left hand.
6. This way the lamp cover can be removed.
7. The bulb reflector can be removed directly by hand.
8. In this way, the disassembly of the strong light flashlight is completed.
There is a flashlight in the water. She shines greensetting on a plane mirror above the water surface, parallel to the water surface. After reflection, the light enters the water again. (
The waterproof flashlight is made of ABS engineering plastic and is suitable for businesses, shops and other places. The bulb is made of high-brightness halogen bulbs. The shell is made of plastic ABS technique The charging current is 500mA and the service life is up to 100,000 times It is suitable for emergency use in businesses, shops, homes, travel, driving, camping, etc. not just a waterproof flashlight, but a diving flashlight A diving flashlight must meet the following conditions and precautions: A sufficiently long battery life, practical attachment aids, such as straps and straps. ropes. hard objects in water Do not rotate the head and switch parts underwater and check if the pi.Connection parts are connected before entering the water. Pay attention to the underwater depth indicated on your flashlight and do not exceed the value. nominal value 6. Remember to clean it with fresh water and dry it after use
As shown in the picture: the flashlight emits when the light hits the water surface vertically, the direction of. the spread remains unchanged; when light hits a plane mirror parallel to the water surface, because the light hits the plane mirror vertically, the reflected light returns along the original path and the light enters the water vertically again. angle , angle of incidence and angle of refraction are both 0°, so option C is correct
So choose C.