PHYSICS - Trial Paper Collection

papercollection9MARKNOMARKING CRITERIASUB TOTAL10(a) (i) State the meaning correctly 1- A wave in which the vibration of particles in the medium isparallel to the direction of propagation of the wave. 1(ii)Explain the production of sound waves correctly- When a tuning fork vibrates, layers of air vibrate- The particles of air undergo s series of compression andrarefaction- Sound energy is propagated through the air in the form ofwaves1111 4(b) (i) Compare the amplitudes of the wave form correctly- The amplitude in Diagram 10.2 is higher1(ii)(iii)(iv)(v)Compare the peak values of the wave form correctly- The peak value in Diagram 10.2 is higherState the relationship between amplitude and peak valuecorrectly- The higher the amplitude, the higher the peak valueState the relationship between the peak value and loudnesscorrectly- The higher the peak value, the louder is the sound.State the relationship between the loudness and the amplitudecorrectly- The higher the amplitude, the louder is the sound1111 5(c) (i) Suggest the type of frequency correctly 1- The boat must use high frequency sound wavesGive the reason correctly- Smaller wavelength, less diffractedSuggest the type of energy correctly- High energy wavesGive the reason correctly- High penetrating power1114(ii)Suggest the list of equipments needed for the measurementTransmitterReceiverSound generatorCRO[Any of the three above] 3(iii)State the method of measuring the time- The time taken, t from the transmitter to the receiver is recordedby the CRO- The speed of the sound wave, v in water is given- The depth of the sea, d = 2vt111320