PASCO OS-8532 CONCAVE MIRROR ACCESSORY - Manual (Page 2)

2
Concave Mirror for Basic Optics 012-06528A
EQUIPMENT NEEDED
– Concave Mirror – Half-Screen
– Optics Bench (from OS-8515) – Light Source (from OS-8515)
Purpose
The purpose of this experiment is to measure the focal length of a concave mirror.
Procedure
1. Mount the Light Source at one end of the Optics Bench. Place the Concave Mirror at the other end of the Optics
Bench.
2. Position the Light Source so the crossed arrow target is aimed at the Concave Mirror and the concave surface of
the mirror faces the light source.
3. Place the Half-Screen a few centimeters in front of the Concave Mirror (between the mirror and the Light
Source).
4. Move the Half-Screen closer to or farther from the Concave Mirror until the reflected image of the crossed
arrow target on the white screen is focused.
5. Measure the distance between the position indicators on the Half-Screen and the Concave Mirror.
Experiment : Focal Length of a Concave Mirror
PA SCO scie
ntif ic
Optic
s B
ench
POWER SUPPL
Y JACK
12V @ 800mA
OS -85 17
PA TT ER N LIGHT SOURCE CO LO R
TO REPLACE BULB SEE INSTR UCTION MANUAL. BULB : 12V 10W G-4
DO NOT TO UCH BULB
WI TH FINGERS. DISCONNECT
PO WE R
BEFORE CHAN
GING BULB
. TO REMOVE LIGHT
SOURCE
GENTL Y SPREAD BRACKET
.
5 3 1
RA Y
SL IT S
BA SIC O PT IC S
Optics Bench
Light Source
Half-Screen
Concave Mirror
crossed arrow target
Figure 3: Experiment Setup
example: image on
Half-Screen