![A laser beam of 10mW power and wavelength 700nm has aperture of 3mm. If it is focused by a lens of focal length 5cm, the intensity of image is A laser beam of 10mW power and wavelength 700nm has aperture of 3mm. If it is focused by a lens of focal length 5cm, the intensity of image is](https://doubtnut-static.s.llnwi.net/static/web-thumb/17960084_web.png)
A laser beam of 10mW power and wavelength 700nm has aperture of 3mm. If it is focused by a lens of focal length 5cm, the intensity of image is
![High Power green torch Focusable USB Green pointer 10000m 5MW Adjustable burning firecrackers Focus Lazer Pen | Lazada PH High Power green torch Focusable USB Green pointer 10000m 5MW Adjustable burning firecrackers Focus Lazer Pen | Lazada PH](https://lzd-img-global.slatic.net/g/p/4f8c5606f7c7835296c74c6cca3cbae6.jpg_720x720q80.jpg_.webp)
High Power green torch Focusable USB Green pointer 10000m 5MW Adjustable burning firecrackers Focus Lazer Pen | Lazada PH
![Fusine® Ultra Powerfu Laser Pointer Pen Beam Light 5Mw 650Nm Presentation Pointer (Green Laser Pointer) : Amazon.in: Office Products Fusine® Ultra Powerfu Laser Pointer Pen Beam Light 5Mw 650Nm Presentation Pointer (Green Laser Pointer) : Amazon.in: Office Products](https://m.media-amazon.com/images/I/51KO2QtXE8L._SX679_.jpg)
Fusine® Ultra Powerfu Laser Pointer Pen Beam Light 5Mw 650Nm Presentation Pointer (Green Laser Pointer) : Amazon.in: Office Products
![What Happens if You Focus a 5W Laser With a Giant Magnifying Glass? Negative Kelvin Temperature! - YouTube What Happens if You Focus a 5W Laser With a Giant Magnifying Glass? Negative Kelvin Temperature! - YouTube](https://i.ytimg.com/vi/jdjTYlReE-I/maxresdefault.jpg)