Question
Download Solution PDFWhich one the followings materials cannot be used to make a lens?
This question was previously asked in
Army Havildar SAC 2025 Mock Paper
Answer (Detailed Solution Below)
Option 2 : Clay
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Detailed Solution
Download Solution PDFThe correct option is 2 i.e., Clay.
- Clay cannot be used to make a lens.
- Clay is an opaque material.
- Water and glass are transparent material so they can be used to form the lens.
- Some plastics which are transparent can be used to make a lens.
- The Refractive index of water is 1.333.
- The Refractive index of Diamond is 2.42.
- The Refractive index of ice is 1.31
Latest Army Havildar SAC Updates
Last updated on Jul 1, 2025
-> The Indian Army has released the Exam Date for Indian Army Havildar SAC (Surveyor Automated Cartographer).
->The Exam will be held on 9th July 2025.
-> Interested candidates had applied online from 13th March to 25th April 2025.
-> Candidates within the age of 25 years having specific education qualifications are eligible to apply for the exam.
-> The candidates must go through the Indian Army Havildar SAC Eligibility Criteria to know about the required qualification in detail.
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