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ECC Allahabad Questions and Answers

LocationAllahabad (Uttar Pradesh)
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Updated on - Oct 31, 2023 12:22 AM IST

Questions Asked On Ewing Christian College, Uttar Pradesh

J
Jayita Ekka •  today

Dear student,

You are asking if the focal length of a lens is 20 cm, what is its power in diopters?

Calculating Lens Power:

  • Power of a lens is defined as the reciprocal of its focal length when expressed in meters
  • The unit of power of a lens is diopter (D)

Formula:

  • Power (P) = 1 / focal length (in meters)

Given:

  • Focal length (f) = 20 cm = 0.2 meters

Calculation:

  • Power (P) = 1 / 0.2 = 5 diopters

Therefore, the power of the lens is +5 diopters

Why is it positive?

  • A positive power indicates a convex lens (converging lens)
  • Convex lenses are thicker at the center and thinner at the edges
  • They converge light rays to a point called the focus

convex lens

Additional Notes:

  • Concave Lens: If the lens were concave (diverging lens), the power would be negative
  • Units: Always ensure that the focal length is converted to meters before calculating the power in diopters

Therefore, if a lens has a focal length of 20 cm, its power is +5 diopters. This means it is a convex lens capable of converging light rays.

A
Apoorva Bali •  3 weeks ago

Dear Student,

Yes, you are eligible to apply for NIMCET exam 2025 with a BBA degree. However, if you have qualified graduation with at least 60%, you are held eligible while for reserved candidates minimum mark is 55%. Students in the final year of graduation can also apply. Read more about NIMCET Eligibility Criteria on our page.

For any further inquiries, please feel free to reach us at hello@collegedekho.com.

Thank You

D
Dewesh Nandan Prasad •  1 month ago

Dear Student,  As per the eligibility criteria prescribed for NIMCET, candidates holding a bachelor's degree in Mathematics or Statistics as one of the compulsory subjects from a recognised university is eligible to appear for the NIMCET exam. As per the situation, you will be eligible to appear for the NIMCE 2026. However, you have to submit your degree certificate in the counselling process in May 2027. We hope that we have answered your query successfully. All the best for your great future ahead!

S
Shivani •  2 months ago

The applicants can access the previous year question papers pdfs by visiting the nimcet.info/previous-year-papers website and check the year-wise question papers. It is important for the applicants to go through or solve the NIMCET previous year question papers for better preparations. You can check the last three previous year question paper links here and download the pdfs for your future reference. 

NIMCET Year-Wise Question Papers 

Download Link

NIMCET 2023 Question Paper 

Download 

NIMCET 2022 Question Paper 

Download 

NIMCET 2021 Question Paper

Download 

P
P sidhu •  Oct-04-2024
The LPUNEST (Lovely Professional University National Entrance and Scholarship Test) is an entrance examination conducted by LPU for admissions to various undergraduate and postgraduate programs. This test evaluates candidates on subjects relevant to their chosen fields, helping the university identify the most suitable students. Additionally, LPUNEST offers scholarship opportunities based on performance, making higher education more accessible for deserving candidates. The exam is a crucial step for students aiming to secure a seat at LPU and benefit from its quality education.