All Categories Alerts Wishlist Cart

If the radius of curvature of a convex lens is 20 cm, what is its focal length? (2022)

Practice Questions

1 question
Q1
If the radius of curvature of a convex lens is 20 cm, what is its focal length? (2022)
  1. 10 cm
  2. 20 cm
  3. 30 cm
  4. 40 cm

Questions & Step-by-step Solutions

1 item
Q
Q: If the radius of curvature of a convex lens is 20 cm, what is its focal length? (2022)
Solution: The focal length f of a lens is given by f = R/2. Therefore, f = 20 cm / 2 = 10 cm.
Steps: 5

Related Questions

W
What is the acceleration due to gravity on the surface of the Earth? (2018)
Question: What is the acceleration due to gravity on the surface of the Earth? (2018)Options: 9.8 m/..
A
A plane mirror produces an image that is: (2023)
Question: A plane mirror produces an image that is: (2023)Options: Real and invertedVirtual and erec..
I
In a concave lens, the focal length is: (2023)
Question: In a concave lens, the focal length is: (2023)Options: PositiveNegativeZeroInfiniteCorrect..
W
Which law states that the current through a conductor between two points is dire
Question: Which law states that the current through a conductor between two points is directly propo..
W
Which of the following is an example of a non-renewable energy source? (2017)
Question: Which of the following is an example of a non-renewable energy source? (2017)Options: Sola..
Biology (School & UG)
Biology (School & UG)
Chemistry (School & UG)
Chemistry (School & UG)
Civil Engineering
Civil Engineering
Commerce & Accountancy
Commerce & Accountancy
Computer Science & IT
Computer Science & IT
Current Affairs & GK
Current Affairs & GK
Data Structures & Algorithms
Data Structures & Algorithms
Electrical & Electronics Engineering
Electrical & Electronics Engineering
English (School)
English (School)
General Aptitude
General Aptitude
General Knowledge
General Knowledge
General Knowledge & Current Affairs
General Knowledge & Current Affairs
Languages & Literature
Languages & Literature
Law & Legal Studies
Law & Legal Studies
Major Competitive Exams
Major Competitive Exams
Mathematics (School)
Mathematics (School)
Mechanical Engineering
Mechanical Engineering
Medical Science
Medical Science
Physics (School & Undergraduate)
Physics (School & Undergraduate)
Quantitative Aptitude & Reasoning
Quantitative Aptitude & Reasoning
Social Science (School)
Social Science (School)
Technical
Technical
Verbal and Reasoning
Verbal and Reasoning
Vocational & Skill Development
Vocational & Skill Development
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely