PHYSICS-Stationary Waves Questions and Answers
Practice ModeShowing 10 of 50 questions
Q21
In a stationary wave, the energy is primarily:
Answer: Option B
Explanation: Energy in stationary waves is stored, not transmitted.
Q22
The number of nodes in the fundamental mode of vibration of a string fixed at both ends is:
Answer: Option B
Explanation: Fundamental mode has 2 nodes at the fixed ends.
Q23
When the length of the string is doubled, the fundamental frequency:
Answer: Option B
Explanation: Frequency is inversely proportional to length of string.
Q24
In a closed organ pipe, the fundamental frequency is:
Answer: Option C
Explanation: Closed pipe has fundamental frequency with wavelength 4 times pipe length.
Q25
Stationary waves are also called:
Answer: Option B
Explanation: Stationary waves are called standing waves as they don't propagate.
Q26
The velocity of particles in a stationary wave is zero at:
Answer: Option B
Explanation: At nodes, particles have zero velocity and maximum strain.
Q27
Which harmonic is missing in a closed organ pipe?
Answer: Option C
Explanation: Closed pipes contain only odd harmonics.
Q28
The ratio of frequencies of fundamental, first and second overtones in an open pipe is:
Answer: Option A
Explanation: Open pipe has all harmonics: 1:2:3 ratio.
Q29
In Melde's experiment, the string vibrates with:
Answer: Option B
Explanation: Melde's experiment demonstrates stationary waves in strings.
Q30
The tension in a string is increased four times. The fundamental frequency becomes:
Answer: Option B
Explanation: Frequency is proportional to square root of tension.