8. How much will a person with 72 N weight on Earth, weigh on the moon?
(a) 12 N (b) 36 N (c) 21 N (d) 63 N
9. At what distance should a watchmaker hold his lens from the watch?
(a) At the focal length (b) At less than focal length
(c) At more than the focal length (d) At zero distance
Answers
Answered by
5
8.as the weight on moon is 1/6 in that of earth so a person weighing 72 N will weigh ,
72 × 1/6 = 12
72 × 1/6 = 12
Answered by
3
8. (a) 12 N {since, the weight at moon is 1/6 the weight on earth ]
9. (b) at less than focal length
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