MCQOPTIONS
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MCQOPTIONS
| 1. |
A certain region of a soap bubble reflects red light of wavelength \[\lambda =650nm\]. What is the minimum thickness that this region of the soap bubble could have? Take the index of reflection of the soap film to be 1.41. |
| A. | \[1.2\times {{10}^{-7}}m\] |
| B. | \[650\times {{10}^{-9}}m\] |
| C. | \[120\times {{10}^{7}}m\] |
| D. | \[650\times {{10}^{5}}m\] |
| Answer» B. \[650\times {{10}^{-9}}m\] | |