Q. 244.0( 3 Votes )
The radius of cur
Radius of Curvature(R) = 50cm;
R = 2f
⇒ 50 = 2f
Focal length = 25cm.
When an object is kept at the focus of the concave mirror then the image is formed at infinity.
This can be shown as below:
The Mirror formula is given by:
Where, F is the focal length of the mirror
v is the image distance from the pole of the mirror
u is the object distance from the pole of the mirror
On solving for v, we get
If F=u=25 cm, we get
Therefore the object should be placed at 25cm from the pole of the concave mirror to get an image at infinity.
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