1. If yyou have a focal point of 10cm and an object distance of 100cm, what is t
ID: 2297521 • Letter: 1
Question
1. If yyou have a focal point of 10cm and an object distance of 100cm, what is the image distance?
a.100cm
b. 10 cm
c. 5.26 cm
d. 63.5 cm
2. a nearsighted person does what?
creates a virtual image in front of retina or creates a real image in front of retina
3. Approximately 1000 W/m^2 of light energy hit the Earth's surface, if you have 10 solar panels that are 0.5 m^2, how much energy will you get from 3000 seconds of light?
a. 1.5 x 10^7 J
b. 5.0 x 10^3 J
c. 1.5 x 10^3 J
d. 5.0 x 10^8 J
4. In a double slit experiment, what is the linear distance on the screen between adjacent maxima if the wavelength is 453 nm, the slit separation is 0.150 mm, and the slit screen separation is 39.7 cm?
a. 2.95 mm
b. 1.19 mm
c. 1.46 mm
d. 3.59 mm
Explanation / Answer
1. 1/f = 1/u +1/v
v = uf/u-f
v = 100*10/90
v = 11.11 cm = 10cm
2. creates a virtual image in front of retina
3. apply I = power/area
power = 1000*0.5 = 500 W/m^2
eenrgy E = 500* 3000/10 = 1.5*10^7 secs
4. Y = mLR/d
Y = 1* 453nm* 0.397/0.150mm
Y = 1.198 mm
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