1. All waves must travel through a medium. If light has wavelike properties, wha

Question

1. All waves must travel through a medium. If light has wavelike properties, what is the medium through which it travels? Explain your reasoning.

2. How would changing the color of light from red to green affect the pattern projected on the wall? Explain your answer.

3. The pattern projected on the wall from the light of a red laser is not observed when white light from a light bulb is sent thought the slits. Explain why white light doesn’t produce a fringe pattern.

4. A diffraction grating is like a double slit except it contains a large number of equally parallel slits. What would you predict the differences would be in the pattern projected on the wall?

Explanation / Answer

1. The statement is incorrect. All the waves doesn't need a medium to propogate only waves like acoustic needs. So, light or electromagnetic thought to be needed a medium in the pase which was called as ether but form relativity it has rejected.

2. when light goes through a slit { otherwise there is no meaning to this problem. no prior information on the problem}

for construction interference, d*sin(x)= n*L L-wave length and d- slit width

So, sin(x) is proportional to L

red has higher L so that is more spreaded than green

3.hite light is consisted of several wavelengths. Each wavelength get diffracted differently so that on the screen diffracted light gets interfered again and form whight light again

4. since there are more sources(slits acts like sources) in grating the resolution(angle betwwen two peaks) is greater than double slit. Also intensity is greater in grating becuase diffracted light gets interfered from more sources in the grating.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.