A $1 \,kg$ block attached to a spring vibrates with a frequency of $1\, Hz$ on a frictionless horizontal table. Two springs identical to the original spring are attached in parallel to an $8\, kg$ block placed on the same table. So, the frequency of vibration of the $8\, kg$ block is ..... $Hz$
  • A$0.25$
  • B$0.35$
  • C$0.5$
  • D$2$
JEE MAIN 2017, Medium
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