Class X

Which colour suffers least deviation on passing through a prism?
  1. Red
  2. Violet
  3. Indigo
  4. Blue
Variable focal length of eye is responsible for-
  1. Accommodationof eye
  2. Persistence of vision
  3. Colour blindness
  4. Leastdistanceof distinct vision
When we enter a cinema hall, we cannot see properly for a short time. This is because-
  1. Pupil does notopen      
  2. Pupil does not close
  3. Adjustment of size of pupil takes some time   
  4. None of these above   
Red colour of the sun at the time of sunrise and sunset is because-
  1. Red colour is least scattered    
  2. Blue colour is least scattered
  3. Red colour is scattered the most      
  4. All colours are equally scattered
Splitting of white light into seven colours on passing through theglassprism is called-
  1. Reflection
  2. Reflection
  3. Scattering
  4. Dispersion
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