Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: A famous paintingwas painting by not using brush strokes in the usual manner, but rather a myriad of small colour dots. In this painting the colour you see at any given place on the painting changes as you move away. Reason: The angular separation of adjacent dots changes with the distance from the painting.A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true but reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
Correct Answer: A
Solution :
Resolving power \[=1.22\frac{\lambda }{d},\], where \[\lambda \] is wavelength d is distance. For the human eye the resolving power or angular seperation of objects changes as distance from the object changes. Thus, when we are close to the pointing our eyes can pick out the separate colours of dots. But when we move away from the painting, our eyes blend the dots and we see different colours.
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