Questions in Ray Optics and Optical Instruments

Select	Question
	A convex mirror has a focal length $f$. A real object is placed at a distance $f$ in front of it from the pole produces an image at
	An object $1cm$ tall is placed $4cm$ in front of a mirror. In order to produce an upright image of $3cm$ height one needs a
	Match List I with List II and select the correct answer using the codes given below the lists :
	A concave mirror gives an image three times as large as the object placed at a distance of $20cm$ from it. For the image to be real, the focal length should be
	The minimum distance between the object and its real image for concave mirror is
	An object is placed at $20cm$ from a convex mirror of focal length $10\,cm.$ The image formed by the mirror is
	A point object is placed at a distance of $10\,cm$ and its real image is formed at a distance of $20\,cm$ from a concave mirror. If the object is moved by $0.1cm$ towards the mirror, the image will shift by about
	Under which of the following conditions will a convex mirror of focal length f produce an image that is erect, diminished and virtual
	The focal length of a convex mirror is 20 cm its radius of curvature will be
	A concave mirror of focal length 15 cm forms an image having twice the linear dimensions of the object. The position of the object when the image is virtual will be