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Astigmatism:
In this defect the surface of eye is not perfectly spherical. The eye has different focal point in dissimilar planes and image of an object is not focused clearly on the retina.
Correction:
Astigmatism is corrected by asymmetrical lenses which have dissimilar radii of curvature in dissimilar plane.
Basic principles of spectrophotometry: An absorbance spectrophotometer is an instrument that measures the fraction of the incident light transmitted through a solution
What do you mean by lateral shift produced by a parallel sided glass slab for grazing incidence of light? Describe dispersive power of a medium for a pair of colours.
a) Spin motion of electrons b) On the basis of spin and orbital motion of electrons c) These are feebly attracted in an external magnetic field i.e., have a tendency to go fr
The substances which can be stretched to big values of strain are known as elastomers. e.g. elastic tissue of aorta, the main artery carrying blood from the heart.
Why we feel sky blue in color? The blue color of the sky is because of Rayleigh scattering. As light moves by the atmosphere, most of the longer wavelengths pass straight thr
Roller Coaster G-Forces Roller coaster rides are infamous for forming accelerations and g-forces that are capable of transforming stomach contents within airborne projectiles.
ideal gas constant; universal molar gas constant; R The constant which acts in the ideal gas equation. It is 8.314 34 J/K/mol. ideal gas equation An equation that sums
Ask question #how to work full wave rectifier#
Reverse Characteristic of a Zener diode Reset voltage to zero. Connect zener diode as shown in fig. and reverse characteristics are demonstrated in fig. Raise voltag
PHYSICS ASSINGMENT ELECTRON MICROSCOPY COMPONENT. PLEASE ANSWER THESE QUESTIONS WITH DEATALING AND referencing if it needed. many thanks
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