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6. A 1- cm tall object is placed 25 cm in front of a covering lens...

6. A 1- cm tall object is placed 25 cm in front of a covering lens .If the focal length is 10 c, , the image is   

a) real , upright and reduced

b) Irtual , inverted, and enlarged

c) Virtual , inverted .and reduced

d) real , inverted ,and reduced.

7. A runner is approaching an ice cream truck that is double parked. The ice cream truck is playing music at a frequency of 80 Hz . As the runner passes the ice cream truck , what could a possible answer   for the observed frequency ?

a) 80 Hz

b) 100 Hz

c) 60 Hz

8) Mary has a weight of 500 N on Earth . Determine her mass

a) 51 ks

b) 4,900 kg

c) 9,8 kg

d) 500 kg

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