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Grade: 12
        

A cubical room is formed with 6 plane mirrors.An insect moves along the diagonal of the floor with uniform speed.The velocity of its image in two adjacent walls is 20underroot2 cms^-1.Then the velocity of image formed by the roof is  

10 years ago

Answers : (1)

Ramesh V
70 Points
							

The velocity of image along the floor is 20 cm/sec as its component in side walls is 14.14 cm/sec each

so the velocity of image roof is same as floor equals 20 cm/sec

note: I'm not 100% sure with the answer, plzz wait for answer from other experts

10 years ago
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