1.should we find the error in the wavelength calculation, and if we do have

to how should we do it?

NO.

2. Should the current actually increase when the aluminum combs are placed in front of the microwaves.

I don't know. But you should tell me why it dramatically decrease the current read by the meter,

when the comb is positioned in a certain way.

3. Do we have to explain why it increases the current read by the diode?(in question 2)

No.

4.Do we have to explain why the increase in diode distance from the microwave source decreases

the current read by the diode?

No.

5.For part 6, the interference is suppose to be caused by the microwaves

deflected from the mirror, and the microwaves produced by the generator.

But, how can this be since the microwave generator is pointed towards the

mirror?

The wave is partially spherical.