An object moves in such a way that the distance is always constant. This motion of the object can be:
One of the following does not apply to a concave mirror. This is : (a) focal length is negative (b) image distance can be positive or negative (c) image distance is always positive (d) height of image can be positive or negative
When we use 'g' as positive and negative in motion under gravity.?
Please explain I'm always confused in this.
What will be the value of focal length when object is placed at Infinity in convex mirror (positive or negative)?