Chapter 12
fork (Fig. 12.1). • Observe what happens and discuss with your friends. Activity _____12.2 • Fill water in a beaker or a glass up to the brim. Gently touch the water sur face with one of the prongs of the vibrating tuning fork, as shown in Fig. 12.2. • Next dip the prongs of the vibrating tuning fork in water, as shown in Fig. 12.3.
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