Ahe–ne laser illuminates a narrow, single slit that is 1850 nm wide. the first dark fringe is found at an angle of 20.0∘ from the central peak. 1) determine the wavelength of the light from the laser. (express your answer to three significant figures.)

Wavelength of light will be 632.73 nm

Explanation:

We have given width of the single slit

Angle is given as

We have to find the wavelength of light for first dark fringe

We know that for dark fringe it is given that

For first fringe n = 1

So

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.