Question

12. A disc arranged in a vertical plane has two groves
of same length directed along the vertical chorg AB
and CD as shown in the fig. The same particlesbslide
down along AB and CD. The ratio of the time it is
a.1:2
(b) 1:√2
(c) 2:1
d.√2:1​

Answer 1

Answer:

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Answer 2

Answer:

(b) is the ans I hope u can understand