Having trouble with the verbage of these two questions. Please answer and explai

Question

Having trouble with the verbage of these two questions. Please answer and explain. Thanks a bunch.

Question 1

If you double the amplitude of an electromagnetic wave, the intensity of that wave:

1. will go down by a factor of 2.

2. will go down by a factor of 4

3. will go up by a factor of 2.

4. will go up by a factor of 4.

5. will remain unchanged.

Question 2

If you double the frequency of an electromagnetic wave, the velocity of the wave

1. will go down by a factor of 2

2. will go down by a factor of 4.

3. will go up by a factor of 2

4. will go up by a factor of 4.

5. will remain unchanged

Explanation / Answer

1. will go up by a factor of 4.

2. will down up by a factor of 4.

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