Class VII

The basic unit of speed is : 
  1. km/min 
  2. m/min 
  3. km/h 
  4. m/s 
Which of the following relatons is correct ? 
  1. Speed = Distance x Time 
  2. Speed = Distance ÷ Time 
  3. Speed = Time ÷ Distance 
  4. Speed = 1/(Distance x Time) 
The metallic ball in a pendulum is called as _______
  1. Gong
  2. Ammeter
  3. Rod
  4. Bob
Which of the following instrument measures time with the most accuracy?
  1. sun dial
  2. sand clock
  3. quartz clock
  4. mechanical clock with gears
The metallic ball in a pendulum is called as _ 
  1. Gong 
  2. Fork 
  3. Rod 
  4. Bob 
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