TMA

TMA1/PHY192 – Physics Practical II

TMA Quiz Questions
TMA: TMA1/PHY192
PHY192 – Physics Practical II
Mr. Ibanga Efiong (eibanga@noun.edu.ng )
1 The law of reflection says that
2 When a virtual image is created in a plane mirror
3 The critical angle for a light from the bottom of a swimming pool shining upward toward the pool’s surface is the angle
4 Convex mirrors are mostly used as
5 In an experiment involving a spherical mirror, 1/v was plotted on the vertical axis and 1/u on the horizontal axis. What is the linear magnification?
6 Which of the following is NOT true of experiments involving curved mirrors?
7 An estimate of the refractive index of glass is 1.5. If the angle of incidence is

30o30o

the angle of refraction is

19o19o

60o60o

35o35o

70o70o
8 The critical angle for total internal reflection at an air – water interface is approximately

48o48o

. In which of the following situations will total internal reflection occur.

40o40o

55o55o

40o40o

55o55o
9 When refraction occurs which of the following remains unchanged?
10 Which of these may NOT be a useful apparatus in an optical experiment?
11 Refraction is a measure of the ———— as a wave passes from medium to another
12 The image of an object is found to be upright and reduced in size. What type of mirror is used to produce such an image?
13 Convex mirrors are mostly used as
14 Which of the following is NOT true of experiments involving curved mirrors?
15 Which of the following is NOT applicable when plotting the graph of experimntal data?
16 The potentiometer wire plays equivalent role of which of these devices in a circuit?
17 The reason we can read print from any direction is that
18 In an experiment, potential difference is plotted on the vertical axis and current on the horizontal axis. The slope of the graph represents
19 For a metallic conductor, Ohm’s law holds provided
20 Calculate the distance and magnification of an object placed 20cm from a converging lens
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