Take a concave mirror. Focus sunlight on a paper after reflection by m

1.	Take a concave mirror. Focus sunlight on a paper after reflection by mirror to get a bright sharp spot. Actually, bright spot of light on the paper is the image from positionof mirror, calculatte the approximate focal length of mirror.1. What is the nature of the image usually obtained from a concave mirror?2. When does the virtual image is formed from a concave mirror?
Answer» 1. Real Image. 2. In the situation when the position of candle is in between F and mirror, you will not be able to get image.

Take a concave mirror. Focus sunlight on a paper after reflection by mirror to get a bright sharp spot. Actually, bright spot of light on the paper is the image from positionof mirror, calculatte the approximate focal length of mirror.1. What is the nature of the image usually obtained from a concave mirror?2. When does the virtual image is formed from a concave mirror?

Answer»

1. Real Image.

2. In the situation when the position of candle is in between F and mirror, you will not be able to get image.