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Power of combination of two concave lens derivation and formula

Posted by Soni Kushwaha 1 year, 2 months ago

CBSE > Class 12 > Physics

2 answers

Krish Agrawal 1 year ago

The power of a combination of two concave lenses can be determined using the lens formula and the power formula for lenses. When lenses are in contact (i.e., their curved surfaces are facing each other), the formula to calculate their combined power is: \[ P_{\text{total}} = P_1 + P_2 \] Where: - \( P_{\text{total}} \) is the total power of the combination of lenses. - \( P_1 \) is the power of the first lens. - \( P_2 \) is the power of the second lens. The power \( P \) of a lens is given by: \[ P = \frac{1}{f} \] Where: - \( P \) is the power of the lens. - \( f \) is the focal length of the lens. If you have two concave lenses with focal lengths \( f_1 \) and \( f_2 \), you can calculate their individual powers as \( P_1 = \frac{1}{f_1} \) and \( P_2 = \frac{1}{f_2} \), respectively. Then, you can find the total power by adding these individual powers. So, to calculate the total power of a combination of two concave lenses, simply add their individual powers using the formula \( P_{\text{total}} = P_1 + P_2 \). This is applicable when the lenses are in contact. If they are separated by a distance, you would need to consider the separation between the lenses when calculating their combined power.

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Rahul Chauhan 1 year, 1 month ago

1/f1+1/f2=1/F

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Derive expression for torque on a dipole in electric field also right stable and unstable condition what will happen if it is kept in non uniform electric field

Posted by Komal Sharma 1 year, 2 months ago

CBSE > Class 12 > Physics

0 answers

ANSWER

The revolt of 1857

Posted by Kangabam Kennedy Singh 1 year, 2 months ago

CBSE > Class 12 > History

0 answers

ANSWER

rapid transition to online learning, as a consequence of COVID-19, has highlighted the risks of student disengagement, and the subsequent impact on lower student achievement across multiple courses. 1. The recent pandemic has changed how millions around the globe are educated. New solutions and innovations in the education system are the need of the hour. Looking at the new digital split, the approach may increase the equality gaps. More than 500 million students across the globe had to pause their on-going studies at various levels. These changes have and will create a degree of inconvenience, but at the same time would promote innovations and future transformations within the education system. 2. The ‘pile-on effect’ of the coronavirus is that, during the global COVID-19 pandemic, interruptions to education can have long term implications — especially for the most vulnerable. There is a real risk of regression for children whose basic, foundational learning (reading, math, languages, etc.) was not strong, to begin with. And millions of children who have already been deprived of their right to education, particularly girls, are being more exposed to health and well-being risks (both psychosocial and physical) during COVID-19. 3. Girls: Young and adolescent girls are twice as likely to be out of school in crisis situations and face greater barriers to education and vulnerabilities such as domestic/gender-based violence when not in school. 4. Refugees, displaced and migrant children: These populations often fall between the cracks as national policies might not necessarily include these vulnerable groups and they must be included and catered for in any global responses to this crisis if this has not already occurred. 5. Children and youth with disabilities: Along with other marginalized populations, including children from minority groups, are neglected in the best of times and have lower educational outcomes than their peers. 6. Young people affected by trauma or mental health issues: Schools and learning centers are places for communities to address health related issues, including mental health and psychosocial support (MHPSS), which the most vulnerable students rely on for t

Posted by Jaya Shah 1 year, 2 months ago

CBSE > Class 12 > English Core

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A company issue for public subscription 50000 share of 10 each at par payable as 4+3+2+1. Public applied for 75000 share an allotment was made to they applicant on 60000 share on pro database. Other applications being rejected all money was duree received except. Mr.a holding 2000 share failed to pay 2 call Mr.b holding 1000 share failed to pay the finale call

Posted by Prem Agarwal 1 year, 2 months ago

CBSE > Class 12 > Accountancy

1 answers

Prem Agarwal 1 year, 2 months ago

What is answer

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Write tags used in to add audio file in web page

Posted by Mahi Verma 1 year, 2 months ago

CBSE > Class 12 > Information Technology (802)

4 answers

Aseem Mahajan 1 year, 2 months ago

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Account Deleted 1 year, 2 months ago

<audio controls> <source src="horse.ogg" type="audio/ogg"> <source src="horse.mp3" type="audio/mpeg"> </audio> You can use audio tag ..

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Account Deleted 1 year, 2 months ago

<Audio>*

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Account Deleted 1 year, 2 months ago

<audio> (may be)

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who is the author of chapter Lost Spring?

Posted by Shivanshu Saxena 1 year, 2 months ago

CBSE > Class 12 > English Core

2 answers

Prneet Kaur 💓 1 year, 1 month ago

Anees jung

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Sakshi Sharma 1 year, 2 months ago

Anees jung

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tan^-1 {2x/1-x^2} diff wrt x

Posted by Gursewak Singh 1 year, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Tushar Tushar 1 year, 1 month ago

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Module one practice assignment 4 answer sheet

Posted by Mnprit Dm 1 year, 2 months ago

CBSE > Class 12 > English Core

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Posted by Jiya Kashyap 1 year, 2 months ago

CBSE > Class 12 > Accountancy

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Nikhil has come out successfully in the IIT internet entrance examination he has decided to have a party with her friend write out an invitation giving details of any time and date do not exceed 50 words

Posted by Vivek Kumar 1 year, 2 months ago

CBSE > Class 12 > English Elective NCERT

1 answers

Abahy Singh 1 year, 1 month ago

Okay

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Business studies project: stock exchange

Posted by Denny Pradhan 1 year, 2 months ago

CBSE > Class 12 > Business Studies

2 answers

Prachi Artani 1 year, 1 month ago

Actually in my view it is best project for class 12👏🏻👏🏻

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Prachi Artani 1 year, 1 month ago

I also taken stock market as exibition

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IfA = [[- 3, - 2, - 4], [2, 1, 2], [2, 1, 3]], B = [[1, 2, 0], [- 2, - 1, - 2], [0, - 1, 1]] then find AB and use it to solve the following system of equations x - 2y = 3 2x - y - z = 2 - 2y + z = 3

Posted by Jadavarman Devendra Pandiyar.R 1 year, 2 months ago

CBSE > Class 12 > Mathematics

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Convert acetone into tertiary butyl alcohol

Posted by Dibyangi S 1 year, 2 months ago

CBSE > Class 12 > Chemistry

2 answers

Nandini Upadhyay 1 year, 1 month ago

By grignards reagent

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Siddharth Jaiswal 1 year, 1 month ago

Don't post personal information, mobile numbers and other details.
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Gopal

Posted by Sehajdeep Singh 1 year, 2 months ago

CBSE > Class 12 > Accountancy

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How does the setting of the remote forest location of the Rattrap contribute to the overall tone and mood of the story

Posted by Bhaibav Chhetri 1 year, 2 months ago

CBSE > Class 12 > English Core

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उन दो कारणों को बताइए जो जनजाति के विकास मे सहायक हैं

Posted by Anjali Singh 1 year, 2 months ago

CBSE > Class 12 > समाजशास्त्र

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ANSWER

23)A company forfeited 4,000 shares of 10 each, called up 8, on which application money of 3, 2 on allotment each has been paid. Out of these, 2,000 shares were reissued at 9 per share, fully paid. Pass necessary journal entries for above transactions.

Posted by Puja Acharya 1 year, 2 months ago

CBSE > Class 12 > Accountancy

1 answers

Vipul Ranjan 1 year, 2 months ago

Bank account to application account 12000

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Nishant Ltd. acquired assets of 25,00,000 and took over creditors of 5,00,000 from Ram Enterprises for a purchase consideration of 24,00,000. The consideration was paid by the issue of 9% Debentures of ₹ 100 each at a premium of 20%, to be redeemed at par after 5 years. Pass the necessary Journal entries for the above transactions.

Posted by Puja Acharya 1 year, 2 months ago

CBSE > Class 12 > Accountancy

0 answers

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Cbse syllabus of painting

Posted by Astha Goswami 1 year, 2 months ago

CBSE > Class 12 > Painting

1 answers

Chhavi Saini 1 year, 1 month ago

Syllabus painting

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what is the iupac name of this compound (ch3)2c=chcooh

Posted by Sanjyoti Patel 1 year, 2 months ago

CBSE > Class 12 > Chemistry

1 answers

Soni Kushwaha 1 year, 2 months ago

It will be.. 3-methyl but-2-ene-1-oic acid

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ANSWER

Lesson 2

Posted by Ujala Pal 1 year, 2 months ago

CBSE > Class 12 > Mathematics

0 answers

ANSWER

Harivansh Rai bachhan project file

Posted by Sanjana Kashyap 1 year, 2 months ago

CBSE > Class 12 > हिंदी कोर

0 answers

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Which miniature of rajput school is being known for contrast colour and how they are applied?

Posted by Divya Singh 1 year, 2 months ago

CBSE > Class 12 > Painting

0 answers

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Describe in detail how the habit of stamp collection help in the story 3rd

Posted by Gulshan Kumar 1 year, 2 months ago

CBSE > Class 12 > English Core

1 answers

Mnprit Dm 1 year, 2 months ago

Charlie's stamp collection serves as a symbol of his fascination with the past and his desire to escape the present. Each stamp represents a different era or location, and Charlie spends hours poring over them, imagining what life was like in those times and places. Hope this help u

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Finding rank of a matrix questions

Posted by 💜Army💜 Girl 1 year, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Aseem Mahajan 1 year, 2 months ago

<font face ="Times New Roman">Why do i remember someone with this name fighting with me

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Derivative of √tanx

Posted by Afiya Es 1 year, 2 months ago

CBSE > Class 12 > Mathematics

1 answers

Akash Kumar 1 year, 1 month ago

sec^2x/2(tanx)^1/2

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Difference between Rural Marketing Centre and Urban Marketing Centre.

Posted by Simran Chetry 1 year, 2 months ago

CBSE > Class 12 > Geography

1 answers

Shahnawaz Alam Ansari 10 months, 3 weeks ago

Rural marketing centers are quasi-urban centers that provide goods to nearby settlements. Urban marketing centers are developed and offer a variety of products and services from every institution.

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Two charges q1 and q2 separated by a small distance satisfied the equation q1 and q2 =0 what does it tell us about the charges

Posted by Srashti Singh 1 year, 2 months ago

CBSE > Class 12 > Physics

1 answers

Ankur Thenua 1 year, 2 months ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
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Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

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Value of x if 2x 5=6 -2 8 x -7 3

Posted by Rohan Jain 1 year, 2 months ago

CBSE > Class 12 > Mathematics