Leon sees a poster that shows a lake in front of a snow-capped mountain. the mountain appears upside down in the lake. which best explains why the image of the mountain appears in the lake? a. the surface of the lake is smooth. b. the surface of the lake is transparent. c. the surface of the lake is polished. d. the surface of the lake is rough.

The correct answer is "The surface of the lake is smooth".

Explanation:

The light gets reflected from the smooth surface at the same angle as it hits that surface. If the light gets reflected in all direction from the rough surface when it hits the surface. Then, there will be diffuse reflection.

In the given problem, Leon sees a poster that shows a lake in front of a snow-capped mountain. The mountain appears upside down in the lake. Here, the water acts like a mirror. The light rays incident on the surface of the water from the mountain then the reflected rays get reflected back from the smooth surface of the lake. Here, the angle of incidence is equal to the angle of the reflection.

One can see the image of the object on the surface of the lake.

Therefore, the correct option is (A).

the answer is a.

Explanation: have a good day loves

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =