A pond of water appears less deep due to (a) reflection (b) diffraction (c) refraction (d) polarization
Option C. The obvious intensity will appearance much less that its actual intensity because of the refraction of mild. First of all, believe an item at the lowest of the pond, emitting 3 beams of mild: one immediately to the centre of your eye, one above your eye, and one below. Now, as mild travels quicker in air than it does in water, it'll boost up because it breaks the surface, at which factor it bends farfar from the ‘normal’ - the imaginary line perpendicular to the surface. So again to the ones 3 beams, the only coming directly at your eye, and as such flawlessly vertical, will now no longer bend one manner or any other because it leaves the water. The different beams, however, will bend similarly farfar from that center beam, developing a ‘triangle’ with a bigger base, in case you have been to attract a diagram. These new trajectories, if traced backwards, and ignoring a opposite bending in water, will all meet at a brand new factor, better than the real factor of origin.
