a.the amount of sunlight increases.
Explanation:
As a submarine rises to the surface, the change it encounters that is true from the given options is that the amount of sunlight increases.
The bottom of the ocean is dark and receives little to no sunlight due to the scattering of the rays by ocean water.
- As the submarine rises, the volume of water column on it decreases and the pressure on it decreases too.
- Also, the temperature rises steadily to the surface.
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Answer: Move the small car so it appears on the left side of the lens.
Explanation:
Because the lens is reflective the small car would apear on the same side as the normal car.
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Answer:

so this is nearly red colour light
Explanation:
As we know that the interference of light from reflected light then the path difference is given as

now we know that for constructive interference of light the path difference is given as

so we will have

so we will have



so this is nearly red colour light
Answer:
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Answer:

Explanation:
As we know that initial height of both the balls are same
also the mass of the two balls is given as

so here we can say by mechanical energy conservation
initial total mechanical energy = final total mechanical energy
since both balls are initially at rest so initial total kinetic energy of the balls will be zero
now final total kinetic energy = initial total potential energy
now we say


so we have

