Class VII

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 motion that repeats itself after regular intervals of time can be ___
  1. To and Fro Motion
  2. Circular Motion
  3. Rectilinear Motion
  4. Ammeter
If the an object moving along a straight line, keeps changing its speed then
  1. The motion is said to be a uniform motion
  2. The motion is said to be a non uniform motion
  3. The object is said to be stationary
  4. The object is said to be stationary
Which of the following is a scalar quantity?
  1. Distance
  2. Displacement
  3. Velocity
  4. Force
The metallic ball in a pendulum is called as _______
  1. Gong
  2. Ammeter
  3. Rod
  4. Bob
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