Saved Bookmarks
| 1. |
A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it. Where is the image located? |
|
Answer» We have, m = 3 u = -10cm ∴ m = \(\frac{-v}{u}\) or, 3 = \(\frac{(-v)}{(-10)}\) Or, ν = 30 cm Thus, the image is formed at distance of 30 cm behind the mirror. Or, ν = 30 cm Thus, the image is formed at distance of 30 cm behind the mirror. Given , m = +3 (As image is real ) u = -10 cm v = ? we know that , m = -v / u = 3 = -v / -10 ⇒ -v = -30 ⇒ v = 30 cm Hence the mirror is placed at 30 cm behind the mirror . |
|