Self Studies

Waves Test - 8

Result Self Studies

Waves Test - 8
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0

    Two tuning forks P and Q, when vibrated, give 4 beats per second. If a prong of the fork P is filed, the beats are reduced to 2/s. What is the frequency of P, if that of Q is 250 Hz?

    Solution

    There are 4 beats between P and Q, so the possible frequencies of P are 246 Hz and 254 Hz, i.e. 250  4 Hz. When the prong of P is filed, its frequency becomes greater than the original frequency. If we assume that the original frequency of P is 254 Hz, then on filing, its frequency will be greater than 254 Hz, and the beats between P and Q will be more than 4. But it is given that the beats are reduced to 2, so 254 is not possible. The required frequency must be 246 Hz (This is true because on filing, the frequency may increase to 248 Hz giving 2 beats with Q of frequency 250 Hz).

Self Studies
User
Question Analysis
  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now