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Physics Past QuestionsQuestion 5011:A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 Calculate the wave number of the wave. A. 3 B. 4 C. 5 D. 2 Question 5012:The near point of a patient's eye is 50.0 cm. What power (in diopters) must a corrective lens have to enable the eye to see clearly an object 25.0 cm away? A. 2 diopters B. 2.5 diopters C. 0.5 diopters D. 3 diopters Question 5013:Which of the following is/are not true about the heat capacity of a substance? (i) It is an intensive property (ii) Its S.I unit is (iii) It is an extensive property (iv) Its S.I unit is A. (i) and (iii) only B. (i), (ii) and (iv) only C. (i) and (iv) only D. (ii) and (iii) only Question 5014:The pinhole camera works on A. The principle of the reversibility of light B. The principle of the rectilinear propagation of light C. Huygen’s principle D. The principle of total internal reflection of light Question 5015:A step-down transformer is used on a 2.2 kV line to deliver 110 V. How many turns are on the primary windings if the secondary has 25 turns? A. 20 B. 250 C. 200 D. 500 |
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