Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11

# An Electrically Maintained Tuning Fork Vibrates with Constant Frequency and Constant Amplitude. If the Temperature of the Surrounding Air Increases - Physics

Short Note

An electrically maintained tuning fork vibrates with constant frequency and constant amplitude. If the temperature of the surrounding air increases but pressure remains constant, the produced will have

(a) larger wavelength
(b) larger frequency
(c) larger velocity
(d) larger time period.

#### Solution

(a) larger wavelength
(c) larger velocity

The velocity varies with temperature as $v \propto \sqrt{T}$.Therefore, it increases. Since the frequency remains constant, the wavelength will increase as  $\lambda \propto v$

Concept: Wave Motion
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#### APPEARS IN

HC Verma Class 11, 12 Concepts of Physics 1
Chapter 16 Sound Waves
MCQ | Q 2 | Page 352