Question

I am nearsighted and wear -2.25 diopter contact lenses for distance vision. without the contact lenses how far can I see?
0.22m
0.56m
0.33m
0.67m
0.44m

In a single slit diffraction experiment, the wavelength of electrons is cut in half. Assuming that the angles are small, by what factor will the width of central bright spot change?
It will become one quarter as large
it will become two times as large
It will become four times as large
It will become 8 times larger
It becomes one half as large

Answer 1