A Tuning Fork Has a Frequency of 300 Hz and Hence

question 9

Multiple Choice

A tuning fork has a frequency of 300 Hz and hence a period of 3.33 × 10−³ s.If the tuning fork is in an inertial frame of reference moving by the observer at speed of 0.620 c,what is the frequency of the fork as measured by the observer? (Assume that measurements are strictly by optical means and that the speed of sound waves in air is not pertinent here) .

• A)235 Hz
• B)382 Hz
• C)185 Hz
• D)185 Hz.
• E)​487 Hz

---

Definitions:

Reserve Requirements

Regulations set by central banks determining the minimum amount of reserves that banks must hold against deposits, influencing the bank's ability to lend.

Money Supply

The total amount of monetary assets available in an economy at any specific time, including cash, bank deposits, and other liquid assets.

Deposit Expansion Multiplier

A ratio that explains the total increase in deposits within the banking system generated from an initial deposit, based on the reserve requirement ratio.

Open Market Securities

Financial instruments such as bonds or stocks that are traded freely on the open market and can be bought and sold by investors.