Question
Download Solution PDFWhich of the following is the unit of length?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 1
Concept:
- Length is a measure of the size or distance between two points. The SI unit of length is the meter (m).
- Light year: It is the distance traveled by light in one year.
- A light-year is a convenient unit of measurement for large distances.
- Generally, a light-year is used to represent astronomical distances.
- One light-year is approximately 9 trillion (9 × 1012) km.
Candela: It is a unit of luminous intensity in a given direction of a light source in the International System of Units (SI). Therefore, it's related to light's brightness, not length.
Lunar month: This relates to time, not length. It is an approximate period of 29.53 days that it takes for the Moon to go through one whole lunar phase cycle, from new moon to the next new moon.
Kelvin: It's a unit of thermodynamic temperature, one of the seven SI base units. It's used for measuring the warmth or coldness of an object or environment, not length.
Last updated on Jun 26, 2025
-> RRB ALP Exam Date OUT. Railway Recruitment Board has scheduled the RRB ALP Computer-based exam for 15th July 2025. Candidates can check out the Exam schedule PDF in the article.
-> Railway Recruitment Board activated the RRB ALP application form 2025 correction link, candidates can make the correction in the application form till 31st May 2025.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here