Physics Part-II
Class 12
NCERT
1
Chapter 1: Ray Optics and Optical Instruments
41 questions
Q1
A small telescope has an objective lens of focal length 144cm and an eyepiece of focal length 6.0 cm. What is the magnifying power of the telescope? What is the separation between the objective and the eyepiece?
Q2
(a) A giant refracting telescope at an observatory has an objective lens of focal length . If an eyepiece of focal length cm is used, what is the angular magnification of the telescope?
(b) If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is , and the radius of lunar orbit is .
(b) If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is , and the radius of lunar orbit is .
Q3
Use the mirror equation to deduce that:
(a) an object placed between and of a concave mirror produces a real image beyond .
(b) a convex mirror always produces a virtual image independent of the location of the object.
(c) the virtual image produced by a convex mirror is always diished in size and is located between the focus and the pole.
(d) an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.
[Note: This exercise helps you deduce algebraically properties of images that one obtains from explicit ray diagrams.]
View all question(a) an object placed between and of a concave mirror produces a real image beyond .
(b) a convex mirror always produces a virtual image independent of the location of the object.
(c) the virtual image produced by a convex mirror is always diished in size and is located between the focus and the pole.
(d) an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.
[Note: This exercise helps you deduce algebraically properties of images that one obtains from explicit ray diagrams.]
2
Chapter 2: Wave Optics
30 questions
3
Chapter 3: Dual Nature of Radiation and Matter
44 questions
4
Chapter 4: Atoms
23 questions
5
Chapter 5: Nuclei
38 questions
6
Chapter 6: Semiconductor Electronics: Materials, Devices and Simple Circuits
25 questions
Question
Medium
Solving time: 4 mins
(a) A giant refracting telescope at an observatory has an objective lens of focal length . If an eyepiece of focal length cm is used, what is the angular magnification of the telescope?
(b) If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is , and the radius of lunar orbit is .
Views: 5,949 students
Found 3 tutors discussing this question
Discuss this question LIVE
5 mins ago
Text solution
Verified
(a) Angular magnification of a telescope is
(b) Let be diameter of moon and be radius of lunar orbit.
Let be the diameter of image of moon.
The angle subtended by the diameter of the moon is equal to the angle subtended by the image.
Was this solution helpful?
36
Share
Report
Filo tutor solutions (3)
Learn from their 1-to-1 discussion with Filo tutors.
8 mins
Uploaded on: 5/19/2023
Connect instantly with this tutor
Connect now
Taught by
Shivam Gupta
Total classes on Filo by this tutor - 25,866
Teaches : Physics, Algebra, Calculus
Connect instantly with this tutor
Notes from this class (1 pages)
Was this solution helpful?
95
Share
Report
5 mins
Uploaded on: 1/10/2023
Connect instantly with this tutor
Connect now
Taught by
Saket Sharma
Total classes on Filo by this tutor - 2,106
Teaches : Physics, Biology, Science
Connect instantly with this tutor
Notes from this class (2 pages)
Was this solution helpful?
63
Share
Report
7 mins
Uploaded on: 5/15/2022
Connect instantly with this tutor
Connect now
Taught by
Abhishek Kumar
Total classes on Filo by this tutor - 1,550
Teaches : Science, Mathematics, SBI Examinations
Connect instantly with this tutor
Was this solution helpful?
137
Share
Report
One destination to cover all your homework and assignment needs
Learn Practice Revision Succeed
Instant 1:1 help, 24x7
60, 000+ Expert tutors
Textbook solutions
Big idea maths, McGraw-Hill Education etc
Essay review
Get expert feedback on your essay
Schedule classes
High dosage tutoring from Dedicated 3 experts
Practice more questions from Physics Part-II (NCERT)
Q1
A small telescope has an objective lens of focal length 144cm and an eyepiece of focal length 6.0 cm. What is the magnifying power of the telescope? What is the separation between the objective and the eyepiece?
Q2
(a) A giant refracting telescope at an observatory has an objective lens of focal length . If an eyepiece of focal length cm is used, what is the angular magnification of the telescope?
(b) If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is , and the radius of lunar orbit is .
(b) If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is , and the radius of lunar orbit is .
Q3
Use the mirror equation to deduce that:
(a) an object placed between and of a concave mirror produces a real image beyond .
(b) a convex mirror always produces a virtual image independent of the location of the object.
(c) the virtual image produced by a convex mirror is always diished in size and is located between the focus and the pole.
(d) an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.
[Note: This exercise helps you deduce algebraically properties of images that one obtains from explicit ray diagrams.]
View all(a) an object placed between and of a concave mirror produces a real image beyond .
(b) a convex mirror always produces a virtual image independent of the location of the object.
(c) the virtual image produced by a convex mirror is always diished in size and is located between the focus and the pole.
(d) an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.
[Note: This exercise helps you deduce algebraically properties of images that one obtains from explicit ray diagrams.]
Practice questions from Physics Part-II (NCERT)
Question 1
Medium
Views: 6,130
Question 2
Easy
Views: 6,843
Question 3
Medium
Views: 5,801
Question 4
Medium
Views: 6,206
Practice more questions from Ray Optics and Optical Instruments
Question 1
Easy
Views: 5,348
Question 2
Easy
Views: 5,937
Question 4
Hard
Views: 5,079
Show that an observer will see an image of a point object as a ring about the centre of the lens with an angular radius
Practice questions on similar concepts asked by Filo students
Question 1
Views: 5,926
Question 2
Views: 5,443
Question 4
Views: 5,730
Stuck on the question or explanation?
Connect with our Physics tutors online and get step by step solution of this question.
231 students are taking LIVE classes
| Question Text | (a) A giant refracting telescope at an observatory has an objective lens of focal length . If an eyepiece of focal length cm is used, what is the angular magnification of the telescope? (b) If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is , and the radius of lunar orbit is . |
| Updated On | May 19, 2023 |
| Topic | Ray Optics and Optical Instruments |
| Subject | Physics |
| Class | Class 12 |
| Answer Type | Text solution:1 Video solution: 3 |
| Upvotes | 331 |
| Avg. Video Duration | 6 min |
