Find the position of an object which when placed
Asked by admin @ in Science viewed by 315 People
find the position of an object when placed in front of a concave mirror of focal length 20 cm produces a virtual image,which is twice size of object.
Asked by admin @ in Science viewed by 315 People
find the position of an object when placed in front of a concave mirror of focal length 20 cm produces a virtual image,which is twice size of object.
Answered by admin @
Answer:
The image is at distance of 20 cm from the mirror on the side opposite to that of object.
Explanation:
Given,
f = −20 and M = 2
We know that ;
=
=
We know,
M = -
Substituting the value of v ,
M = -
Substituting value of f = 20
M =
According to question,
M = 2
= 2
⇒20 = 2u + 40
⇒ u = − 10.
⇒
⇒ = 20
Hence,
The image is at distance of 20 cm from the mirror on the side opposite to that of object.
Asked by admin @ in English viewed by 285 persons
Asked by admin @ in English viewed by 279 persons
Asked by admin @ in Physics viewed by 334 persons
Asked by admin @ in Physics viewed by 333 persons
Asked by admin @ in Physics viewed by 268 persons
Asked by admin @ in Physics viewed by 373 persons
Asked by admin @ in Science viewed by 308 persons
Asked by admin @ in Physics viewed by 300 persons
Asked by admin @ in Science viewed by 398 persons
Asked by admin @ in Science viewed by 408 persons
Asked by admin @ in Math viewed by 418 persons
Asked by admin @ in Physics viewed by 294 persons
Asked by admin @ in Physics viewed by 298 persons
Asked by admin @ in Physics viewed by 323 persons
Asked by admin @ in Chemistry viewed by 341 persons
Asked by admin @ in Science viewed by 6189 persons
Asked by admin @ in Science viewed by 4808 persons
Asked by admin @ in Science viewed by 3893 persons
Asked by admin @ in Science viewed by 3825 persons
Asked by admin @ in Science viewed by 3260 persons
Asked by admin @ in Science viewed by 2261 persons
Asked by admin @ in Science viewed by 1750 persons
Asked by admin @ in Science viewed by 1329 persons
Asked by admin @ in Science viewed by 1297 persons
Asked by admin @ in Science viewed by 1252 persons
Asked by admin @ in Science viewed by 1242 persons
Asked by admin @ in Science viewed by 1111 persons