15. A small block starts sliding down from point A on a slide of irregular shape as shown in the figure. Here x and y-axes represent the horizontal ym and the vertical directions respectively. Coefficient of friction between the slide and the block is 0.6 everywhere. Radius of curvature of the slide everywhere is large enough and speed of the block is small enough so that normal component of acceleration becomes negligible as compared to acceleration of free fall. At which point may the block stop? 4. 12 -4 (a) (5, –8) (c) (12, –6) (b) (10, –8) (d) Insufficient information

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A: to determine the nature of image one need to check the sign magnification which is defined as  m=-vu

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Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.