Once upon a time, in a far-off land, there was a magical observatory perched high on a hill. It was a special place where scientists went to study the stars and the planets in the sky. The observatory had two telescopes: a radio telescope and an optical telescope.

The radio telescope was like a giant ear that listened to the music of the stars. It used an amplifier to make the faint sounds louder so the scientists could hear them better. The optical telescope was like a giant eye that looked at the stars and planets. It used a lens to focus the light and make the images clear.

One day, while the scientists were studying the stars, they noticed something strange. The images from the optical telescope were distorted and blurry. They soon discovered that the lens was damaged and had become concave instead of convex. A concave lens makes things look smaller and farther away, while a convex lens makes things look bigger and closer.

The scientists knew they had to fix the lens so they could see the stars and planets clearly again. They worked hard to repair the lens and make it convex once more. The scientists also made sure to keep the lens clean and free from dust, so the images would not be distorted again.

Finally, the day came when the telescope was ready to be used again. The scientists looked through the telescope and were amazed at the beautiful, clear images of the stars and planets. They could see the stars shining brightly, and the planets had never looked so close.

The optical telescope had a focal point which was the point where all the light rays came to a single point, it made the image clear and sharp. The scientists were so happy and excited to see the stars and planets in such detail. They knew they could now study the stars and planets better than ever before.

And so, the magical observatory continued to be a place of wonder and discovery, where the scientists could listen to the music of the stars and see the beauty of the universe, all thanks to the repaired lens that emitted clear and sharp images.

The End.

Reflections

1. What was the purpose of the radio telescope and the optical telescope at the observatory?
2. What was the problem with the optical telescope and how did the scientists fix it?
3. What was the significance of the repaired lens for the scientists and their studies at the observatory?