While travelling by Delhi metro, you would have seen a big spherical mirror on the platform for safety. If the metro was 2.0m away from the mirror, its image was formed 5cm inside the mirror. Determine: (3) a) The type of mirror b) The focal length of the mirror c) The magnification of the image.
Answers
Given:
Big spherical mirror is present on the platform of metro station. When metro is 2 m away from the mirror, its image is formed 5cm inside the mirror.
To find:
- Type of mirror
- Focal length of mirror
- Magnification of image.
Calculation:
1. The mirror used in the platform is a convex mirror. This type of mirrors help passengers to stay alert when a metro train is approaching from behind.
2. Applying Mirror Formula :
So focal length of mirror is 5.12 cm.
3. Magnification can be calculated as follows;
So , magnification is 0.025. That means that the image is erect and diminished.
Answer:Sorry could not tell for delhi but I will tell for mumbai
Explanation:
Planning. In February 2017, the MMRDA announced that the DMRC was preparing a detailed project report (DPR) on Line 9, a proposed 9 km extension of Metro 7 from Dahisar to Bhayander, via Mira Road. ... The project is estimated to cost ₹3,600 crore (US$500 million).
Termini: Dahisar East; Andheri (East)
Line length: 16.5 km (10.3 mi)
Locale: Mumbai Metropolitan Region
Status: Line 7 (Under Construction