Question
Download Solution PDFमान लीजिये की रेडियम की अर्ध-आयु 1500 साल है। इसका अर्थ है कि रेडियम अपनी आधी मात्रा का विघटन करने के लिए 1500 साल लेगा, यदि नमूने में 100 ग्राम है, तो इसे 50 ग्राम बनने के लिए कितने वर्ष लगेंगे?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFयदि समय t वर्ष में मौजूद रेडियम की मात्रा x(t) है।
सूत्र के अनुसार,
अतः x = x0 ekt
यदि x0 = 100 है, तो x = 100 ekt
दोनों तरफ लघुगुणक करने पर हम पाते हैं कि,
साथ ही,
जब x = 50 है,
t = लगभग 1500 वर्ष
अतः 100 ग्राम रेडियम के 50 ग्राम का विघटन होने के लिए लगभग 1500 वर्ष लगेंगे।
Last updated on Jun 30, 2025
->Indian Airforce Agniveer (02/2026) Notification has been released. Interested candidates can apply between 11th July to 31st July 2025.
->The Examination will be held 25th September 2025 onwards.
-> Earlier, Indian Airforce Agniveer Group X 2025 Last date had been extended.
-> Candidates applied online from 7th to 2nd February 2025.
-> The online examination was conducted from 22nd March 2025 onwards.
-> The selection of the candidates will depend on three stages which are Phase 1 (Online Written Test), Phase 2 ( DV, Physical Fitness Test, Adaptability Test), and Phase 3 (Medical Examination).
-> The candidates who will qualify all the stages of selection process will be selected for the Air Force Group X posts & will receive a salary ranging of Rs. 30,000.
-> This is one of the most sought jobs. Candidates can also check the Airforce Group X Eligibility here.