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Important Questions & Answers: Sensory, Attentional, & Perceptual Processes | Psychology Class 11 - Humanities/Arts PDF Download

Q.1. When we go to a matinee show, on entering the theatre we find it difficult to see things around. However, after spending about 15-20 minutes there, we are able to see almost everything. What is this phenomenon called?

visual adaptation.


Q.2.  _____________ help flattens the lens to focus the distant objects.

ciliary muscles


Q.3. With the help of an example explain Size Constancy.

  • The size of an image on our retina changes when the distance of the object from our eye changes.
  • The far it is, the smaller is the image.
  • On the other hand, our experience shows that within limits the object appears to be about the same size irrespective of its distance.
  • This tendency of the size of objects to remain relatively unchanged with changes in their distance from the observer and the size of the retinal image is called size constancy.

An example is, when you approach your friend from a distance, your perception of the friend’s size does not change much despite the fact that the retinal image (image on retina) becomes larger.


Q.4. The process of organising visual field into meaningful wholes is known as _____________.

form perception.


Q.5. Artist mostly use _____________ to create an impression of depth on a flat surface.

Monocular cues


Q.6. Explain the term Illusion.

Our perceptions are not always truthful. Sometime we fail to interpret the sensory information correctly. This results in a mismatch between the physical stimuli and its perception. These misperceptions resulting from misinterpretation of information received by our sensory organs are generally known as illusions.
Illusions are are experienced more or less by all of us.
They result from an external stimulus situation and generate the same kind of experience in each individual.Illusions are also called "primitive organisations".


Q.7. State three points of difference between Rods and Cones.

Important Questions & Answers: Sensory, Attentional, & Perceptual Processes | Psychology Class 11 - Humanities/Arts

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