Physics - Geometrical Optics Question with Solution | TestHub
An extended object is moving in front of a concave mirror as shown in figure. On L.H.S various velocities of the object and positions are given. On R.H.S some properties of image and its velocity are given. Consider velocity along x-axis only.
Object | Image |
|---|---|
(A) +ve velocity and object is between focus and centre of curvature | (P) +ve velocity |
(B) ve velocity and object is between focus and pole | (Q) ve velocity |
(C) ve velocity and object is beyond centre of curvature | (R) size of image is increasing |
(D) ve velocity and object is virtual | (S) size of image is decreasing |
Options:
Answer:
Solution:
(A) as decreases increases magnification increases. (B) as object goes from P F, image goes from P . (C) object goes from C ; image goes from C focus. (D) object goes from P; image goes from P; decreases with a greater rate .
