Question

Ray diagrams
please help me
concave mirror
1)at infinity
2)at principal focus
3)at front of the mirror​

Answer 1

1). a) Object at infinity:- Since parallel rays coming from the object converge at principal focus, F of a concave mirror; after reflection. Hence, when the object is at infinity the image will form at F. Real and inverted.

2). If the object is placed at principal focus the image forms at infinity.

3).A concave mirror will only produce an upright image if the object is located in front of the focal point. ... Real images can be larger than the object, smaller than the object, or the same size as the object.

if you are not still cleared ask in comment section.

Answer 2

Answer:

U is the position of object,

O is the position of image.

1) at focus

2)at infinity

3) at curvature.