When you stand in front of a convex mirror, the image you see is
a. real and inverted.
b. real and upright.
c. virtual and inverted.
d. virtual and upright.
e. real and inverted if your distance from the mirror is greater than two focal lengths.
[Ques. 2] The seriousness of an asteroid collision is gauged by the ______________ scale.
Fill in the blank(s) with correct word
[Ques. 3] If a positively charged object is brought near a suspended, negatively charged object, the suspended object will be
a. repelled.
b. charged more.
c. discharged.
d. attracted.
[Ques. 4] If you stand closer to a concave mirror than a distance of one focal length, the image you see is
a. real and inverted.
b. real and upright.
c. virtual and inverted.
d. virtual and upright.
e. none of the above because you do not get an image.
[Ques. 5] When a meteor strikes Earth's surface, it is called a(n) ______________.
Fill in the blank(s) with correct word
[Ques. 6] If a negatively charged object is brought near a suspended, negatively charged object, the suspended object will be
a. repelled.
b. charged more.
c. discharged.
d. attracted.
[Ques. 7] A telescope is constructed with two lenses separated by a distance of 25 cm. The focal length of the objective is 20 cm. The focal length of the eyepiece is 5 cm. Calculate the magnitude of the angular magnification of the telescope.
a. 6
b. 4
c. 8
d. 10
e. 5
[Ques. 8] When a meteoroid enters Earth's atmosphere, it is called a(n) ______________.
Fill in the blank(s) with correct word
[Ques. 9] If a positively charged object is brought near a suspended, positively charged object, the suspended object will be
a. repelled.
b. charged more.
c. discharged.
d. attracted.
[Ques. 10] A compound microscope is made with an objective lens (f0 = 0.900 cm) and an eyepiece (fe = 1.10 cm). The lenses are separated by a distance of 10.0 cm. What is the angular magnification? (Assume the near point is 25.0 cm.)
a. 253
b. 450
c. 770
d. 980
e. 635
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