1.Without ________ diffraction would prevent any decent image formation. a. Lens

Question

  1.Without ________ diffraction would prevent any decent image formation.  a. Lenses b. Resolution c. Luck d. Interference 

 2.Short wavelength light  a. Has no reason to live b. Is the basis of the unified field theory c. Is very weak d. Is very energetic e. Is impossible to find in nature 

 3.Diffraction at an opening in an eye or camera limits 

 a. Brightness b. Angular resolution c. Polarization d. Color e. It helps everything 

 4.A larger opening will minimize ________ effects.  a. Wave b. Interference c. Diffraction d. Particle 

 5. A lens solves the problems mentioned above, but now there is a problem with:  a. Resolution b. Upside down c. Complexity 

 6.Which doesn't limit angular resolution:  a. The upside down image b. Detector size c. Lens defects d. Cones, rods, or grain e. Diffraction 

Explanation / Answer

the answers are as follows

(1)d -

reason- diffracted rays must interfer to form image

(2)d -

reason- Energy(E) = h*c/L where

h:planks constant

L:wavelength

so low 'L' means high 'E'

(3)c -

reason- since diffraction causes phase changes in light rays, it limits polarisation

(4)c -

reason- diffraction takes place when the slit opening is comparable to wavelength of light.

if opening is increased , gradually there will be no diffraction

(5)a -

reason- insertion of lens causes the problem of resolution as the lens edges tend to dissperse the light rays

(6)a -

reason- resolution is the minimum resolvable distance in an image. an inverted image

doesn't change the resolution in any way.

hopfully this will help.. any doubt feel free to ask in comment. THANK YOU.

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