What is the dimensional formula for frequency?

Practice Questions

Q1
What is the dimensional formula for frequency?
  1. [M^0 L^0 T^-1]
  2. [M^1 L^0 T^-1]
  3. [M^0 L^1 T^0]
  4. [M^0 L^0 T^1]

Questions & Step-by-Step Solutions

What is the dimensional formula for frequency?
Correct Answer: [M^0 L^0 T^-1]
  • Step 1: Understand what frequency means. Frequency is how many times something happens in a certain amount of time.
  • Step 2: Recall the definition of frequency. It is defined as the number of cycles (or events) per unit time.
  • Step 3: Identify the units involved. Frequency is measured in cycles per second, which is expressed as Hertz (Hz).
  • Step 4: Break down the units. One cycle is a dimensionless quantity, so it has no mass (M) or length (L) dimensions. Time (T) is the only dimension involved.
  • Step 5: Write the dimensional formula. Since frequency has no mass or length, we represent them as M^0 and L^0. For time, since it is in the denominator (1/T), we represent it as T^-1.
  • Step 6: Combine the dimensions. The final dimensional formula for frequency is [M^0 L^0 T^-1].
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