A concave lens with a focal length of 25 cm forms a virtual image of an ant at a dišta of 20 cm from the optical centre of the lens. (a) What is the original position of the ant? (b) Draw a ray diagram to show the formation of a virtual image of the ant.
A concave lens with a focal length of 25 cm forms a virtual image of an ant at a dišta of 20 cm from the optical centre of the lens. (a) What is the original position of the ant? (b) Draw a ray diagram to show the formation of a virtual image of the ant.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
How do i calculate these?
![axis or
and Y are 2
cricket takes 6 secon
speed of the cricket's imag
Straight wire
Solution:
Figure 6.37
u = +18 cm
uz = +24 cm f=+12 cm
1
Thin lens formula,
1
1
12
%3D
f
1 1
1
1
1
12 24
V1
f
V, = +24 cm
1
1
36 - 24
Speed of the cricket's image=
6.
12
18
V1 = +36 cm
= 2 cm s-1
Formative Practice
64
1. A concave lens with a focal length of 25 cm forms a virtual image of an ant at a distance
of 20 cm from the optical centre of the lens.
(a) What is the original position of the ant?
(b) Draw a ray diagram to show the formation of a virtual image of the ant.
2. A small bulb is at a distance of 1.6 m from the screen and a thin convex lens with a focal
length of 30 cm is placed between the bulb and the screen. Determine two positions of the
convex lens that can produce a sharp image on the screen.
[262]
6.4.2
КРМ
puy
LWNS-S I](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3003883f-3f88-4ae7-a7d1-b3f5f553789a%2Feed1c239-5e58-47ae-9bb6-fc1d0917e0fb%2Ftm6vc0j_processed.jpeg&w=3840&q=75)
Transcribed Image Text:axis or
and Y are 2
cricket takes 6 secon
speed of the cricket's imag
Straight wire
Solution:
Figure 6.37
u = +18 cm
uz = +24 cm f=+12 cm
1
Thin lens formula,
1
1
12
%3D
f
1 1
1
1
1
12 24
V1
f
V, = +24 cm
1
1
36 - 24
Speed of the cricket's image=
6.
12
18
V1 = +36 cm
= 2 cm s-1
Formative Practice
64
1. A concave lens with a focal length of 25 cm forms a virtual image of an ant at a distance
of 20 cm from the optical centre of the lens.
(a) What is the original position of the ant?
(b) Draw a ray diagram to show the formation of a virtual image of the ant.
2. A small bulb is at a distance of 1.6 m from the screen and a thin convex lens with a focal
length of 30 cm is placed between the bulb and the screen. Determine two positions of the
convex lens that can produce a sharp image on the screen.
[262]
6.4.2
КРМ
puy
LWNS-S I
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