1.

Find the odd one out and give the reason:i. Simple microscope, Compound microscope, Telescope, Myopia.ii. Myopia, Presbyopia, Hypermetropia, Spectrometer.iii. Presbyopia, Retina, Nearsightedness, Farsightedness.iv. Compound microscope, Kaleidoscope, Simple microscope, Astronomical telescope.v. TV, Motion picture, Complete circle formed by a revolving burning incense stick, Colour blindness.vi. Planets, Stars, Satellites, Rainbow.

Answer»

i. Myopia. It is a defect of vision; others are instruments.

ii. Spectrometer. It is an instrument; others are defects of vision.

iii. Retina. It is a part of the eye; others are defects of vision.

iv. Kaleidoscope. Others are optical instruments.

v. Colour-blindness. Others are examples of persistence of vision.

vi. Rainbow. Others are celestial bodies.



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