Login
Remember
Register
EasyElimu Questions and Answers
Questions
Unanswered
Tags
Users
Ask a Question
Ask a Question
Describe how the focal length of a concave mirror can be determined using a screen and a metre rule.
0
votes
1.1k
views
asked
Jun 21, 2021
in
Physics Form 2
by
anonymous
Describe how the focal length of a concave mirror can be determined using a screen and a metre rule.
reflections
curved surfaces
Please
log in
or
register
to answer this question.
1
Answer
0
votes
answered
Jun 21, 2021
by
anonymous
Using the mirror focus a distant object on to the screen
Adjust the distance the screen & mirror to obtain a sharp image
Measure the distance between the screen & the mirror - this is the focal length of the mirror
Please
log in
or
register
to add a comment.
Related questions
0
votes
1
answer
An object is placed 8cm from a concave mirror whose radius of curvature is 20cm. Determine the position of the image.
asked
Jun 21, 2021
in
Physics Form 2
by
anonymous
reflections
curved surfaces
0
votes
1
answer
An object of height 10 cm is placed 30 cm from a converging lens of focal length 18 cm.
asked
Jun 21, 2021
in
Physics Form 2
by
anonymous
reflections
curved surfaces
0
votes
1
answer
a concave mirror of focal length 20 cm forms a real image three times the size of the object. If the object height is 4cm; determine, using graphical method, the:
asked
Aug 23, 2021
in
Physics Form 2
by
anony mous
reflection at plane surface
concave mirror
magnification formula
0
votes
1
answer
An object O is placed in front of a concave mirror and on the principal axis, as shown in the figure below. Complete the light ray diagram to locate the position of the image.
asked
Jul 7, 2021
in
Physics Form 1
by
anonymous
reflections
rectilinear propagation of light and reflection at planes
0
votes
1
answer
An object is placed 15cm in front of a concave mirror of focal length 10cm.calculate the image distance
asked
Jul 26, 2021
in
Physics Form 2
by
anony mous
reflection at plane surface
concave mirror
Welcome to EasyElimu Questions and Answers, where you can ask questions and receive answers from other members of the community.
Categories
All categories
Mathematics
(632)
English
(287)
Kiswahili
(559)
Chemistry
(663)
Physics
(604)
Physics Form 1
(307)
Physics Form 2
(129)
Physics Form 3
(91)
Physics Form 4
(76)
Biology
(659)
Geography
(537)
History
(568)
CRE
(365)
IRE
(53)
Agriculture
(519)
Business Studies
(379)
Computer Studies
(20)
Home Science
(60)
General Questions
(432)
6.4k
questions
9.6k
answers
6
comments
590
users
...