QUESTION 1: MULTIPLE CHOICE QUESTIONS Various options ar…
QUESTION 1: MULTIPLE CHOICE QUESTIONS Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A-D) next to the question numbers (1.1 to 1.10). 1.1 Complete the sentence:The … of a wave is defined as the number of vibrations per second. A. periodB. frequencyC. speedD. amplitude (2) 1.2 The energy of an object as a result of its motion is known as … energy. A. mechanical B. kineticC. chemical D. potential (2) 1.3 Identify the quantity which requires BOTH magnitude and direction in order to be completely specified. A. Mechanism B. VectorC. Scalar D. None of the above (2) 1.4 Consider the circuit diagram with a 20 V battery and light bulbs L1, L2, L3 and L4 in series. Identify the CORRECT statement: A. L1 and L4 will be the brightestB. L1, L2, L3 and L4 will be equally brightC. L2 and L3 will be the brightestD. L1 will be the brightest (2) 1.5 Two transverse pulses meet and cancel out through a process called: A. diffraction.
B. reflection.
C. constructive interference.
D. destructive interference. (2) 1.6 Sound is: 1 a series of moving compressions and rarefactions.
2 an example of a transverse wave.
3 able to travel through a vacuum.
4 an example of a longitudinal wave.
Which of the above statements about sound is/are correct? A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. 1 and 4 1.7 The energy of a photon of electromagnetic energy can be calculated using the equation: A. E = hf.
B. E = h ÷ f.
C. E =