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(a) 1
(c) 7.5 cm
(b) girl
(b) Darwin
(d) ∞
Air, water and glass are three consecutive media of parallel surfaces through which light is allowed to pass. The ratio of the angle of refraction in the first surface (air-water) to the incident angle at the second surface (water-glass) is
(a) 1
(a) 1
See lessAn object at a depth of 10 cm in water seems to be at a depth of (refractive index of water=4/3)
(c) 7.5 cm
(c) 7.5 cm
See lessA zygote which has an X-chromosome inherited from the father will develop into a
(b) girl
(b) girl
See lessThe theory of-evolution of species by natural selection was given by
(b) Darwin
(b) Darwin
See lessTwo plane mirrors are facing each other. An object placed between them has N number of images. The value of N is
(d) ∞
(d) ∞
See less