Question

Between an electric bulb and a tube light, which forms sharp shadows of objects? Do an experiment to find out and give the reasons.

Answer 1

1. Between electric bulb and tube light electric bulb forms clear and sharp image. 

2. Electric bulb is round in shape. 

3. It takes more voltage and forms intensity light 

4. That’s why electric bulb forms sharp and clear shadows. 

5. But at the tube light shadow it is not sharp. 

6. Here light source is lengthy. 

7. And light fell on objects from different side. 

8. So the shadow does not sharp.