Q.1
THE CENTRES, OF THE 2 SPHERES OF WHICH THE 2 SURFACES OF THE GIVEN LENS, ARE A PART IS KNOWN AS...........
  • CENTRES OF PRINCIPLE
  • CENTRES OF RADII
  • CENTRES OF CURVATURE
  • CENTRES OF LENS
Q.2
Light is unable to pass through ________________ objects
  • opaque
  • coloured
  • blunt
  • dark
Q.3
Light is able to pass through __________________ materials
  • transparent
  • shiny
  • dull
  • opaque
Q.4
We are able to see the moon because it ____________
  • gives out light
  • glows
  • reflects light from the sun
  • reflects light from the earth
Q.5
THE INITIAL RAY, FALLING ON A GLASS SLAB, IS KNOWN AS THE........
  • INCIDENT RAY
  • REFRACTED RAY
  • EMERGENT RAY
  • QUESTION IS WRONG
Q.6
WHEN A RAY OF LIGHT, PROPAGATING IN 1 TRANSPARENT MEDIUM, ENTERS ANOTHER TRANSPARENT MEDIUM, IT IS OBSERVED TO...........
  • REFRACTION OF LIGHT
  • CONCAVE LENS
  • CONVEX LENS
  • REFLECTION
Q.7
THE DISTANCE BETWEEN THE OPTICAL CENTRE AND PRINCIPAL FOCUS OF THE LENS IS KNOWN AS.........
  • CONCAVE LENS
  • CONVEX LENS
  • GLASS PRISM
  • LENS
Q.8
THE RADII OF THE 2 SPHERES, OF WHICH THE LENS SURFACES ARE A PART OF..................
  • RADII
  • RADII OF LENS
  • RADII OF PRINCIPLE
  • RADII OF CURVATURE
Q.9
THE PHYSICAL QUANTITY WHICH IS AN INDICATOR OF THE SPEED OF LIGHT THROUGH A GIVEN MEDIUM IS KNOWN AS.......
  • OPTICAL CENTRE
  • OPTICAL DENSITY
  • PRINCIPAL AXIS
  • LENS
Q.10
A TRANSPARENT MEDIUM, BOUNDED BY 2 SURFACES, OH WHICH AT LEAST 1 IS SPHERICAL IS KNOWN AS.......
  • FOCAL LENGTH
  • LENS
  • GLASS PRISM
  • CONVEX LENS
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