41. Ability to distinguish two closely placed objects is
42. Light appears to travel in a straight line because
43. A lemon kept in water in a glass tumbler appears to be bigger than its actual size when viewed from the outside. This is because of:
44. Bending of light rays in denser medium is termed as
45. Due to . . . . . . . . the star appears twinkling in the sky.
46. Direct viewing of Sun during total solar eclipse causes irreversible damage to eyes. The retinal burn is caused by which one of the following components of the Sun rays?
47. In which of the following cases can Total Internal Reflection (when angle of incidence is greater than the critical angle) take place?
When light travels from
When light travels from
48. An object is placed in front of a convex mirror at a point between the infinity and the pole of the mirror. The image formed will be.
49. Which one of the following colours is seen in the middle of a Rainbow?
50. A ray of light passing through a lens . . . . . . . . will pass without any deviation.
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