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Sahay Sir > Question Answers > MTG NEET Physics > Part 1 > Chapter 4 - Motion in Plane > A cubical room is formed with 6 plane mirrors. An insect moves along a diagonal of the floor with uniform speed. The velocity of its image relative to the mirror in two adjacent walls are 20 root 2 cm/s. Then the velocity of image formed by the roof is

A cubical room is formed with 6 plane mirrors. An insect moves along a diagonal of the floor with uniform speed. The velocity of its image relative to the mirror in two adjacent walls are 20 root 2 cm/s. Then the velocity of image formed by the roof is

A block is moving down a smooth inclined plane staring from rest at time t=0 let Sn​ be the distance travel by the block in the interval t = n - 1 to t = n. The ratio Sn+1​Sn​​ is