Nuclear fusion releases more energy than fission because lighter nuclei (e.g., hydrogen) fuse to form a heavier nucleus (e.g., helium), releasing a large amount of energy.
The energy per nucleon in fusion is higher than fission, as seen in stars like the Sun, where hydrogen fusion powers immense energy output.
ایک ایسا عمل جس میں دو ہلکے مرکزے مل کر ایک بھاری مرکز بناتے ہیں؟
A. Nuclear fusion
B. Beta-decay
C. Nuclear fission
D. Alpha-decay
Explanation
Nuclear fusion is a process where two or more light nuclei (atomic nuclei with a small number of protons and neutrons) combine to form a single, heavier nucleus.
This process releases energy, as the resulting nucleus has a higher binding energy than the original nuclei.
فیوژن ری ایکٹر میں نیوکلائڈز کے درمیان الیکٹرو اسٹاٹک ریپلسیو فورس کو ختم کرنے کے لیے کیا ضروری ہے؟
A. Very high temperature
B. Very small volume
C. Very high pressure
D. All of these
Explanation
In a fusion reactor, it is necessary to overcome the electrostatic repulsive force between nuclides (nuclei) in order to achieve fusion. This requires:
Very high temperature: Fusion reactions occur at extremely high temperatures, typically around 150 million degrees Celsius (270 million degrees Fahrenheit). This energy is needed to overcome the electrostatic repulsive force and bring the nuclei close enough together to fuse.
Very high pressure: Fusion reactions also require incredibly high pressure, similar to those found at the core of the sun. This pressure helps to overcome the repulsive force and increase the likelihood of fusion.
Very small volume: The reaction chamber in a fusion reactor is designed to be extremely small, which helps to increase the density of the plasma (ionized gas) and reduce the distance between the nuclei. This makes it easier to overcome the electrostatic repulsive force and achieve fusion.
