दो नाभिकों की त्रिज्याओं का अनुपात 1 : 2 है । इनकी द्रव्यमान संख्याओं का अनुपात होगा ? - The ratio of the radii of two nuclei is 1 : 2. What will be the ratio of their mass numbers? - Do Nabhikon Ki trijyaon Ka Anupat 1 : 2 Hai . Inki Dravyamaan sankhyaon Ka Anupat Hoga ? General Science in hindi, Physics 1 : 4 question answers in hindi pdf 1 : 6 questions in hindi, Know About 1 : 8 General Science online test General Science notes in hindi quiz book 1 : 12