Draw virtual, magnified image in concave lens. What is the position of object?

What is virtual image?

An object is placed in between the optical centre and focus of a thin convex lens. What is the nature of image of the object?

Define - virtual image.

Fill in the blanks:- Virtual image formed by convex lens is always ______ in respect of the object.

A convex lens of focal lengths 30 cm produces 5 times magnified real image of an object What is the object distance ?

An object is placed in front of a concave mirror, a three times magnified image is formed. If the object is moved through a distance 20 cm towards the mirror, a virtual image of same magnification is formed. What is the focal length of the mirror?

Draw a ray diagram for formation of images in a concave mirror when the object is beyond the centre of cruvature C.

Draw a ray diagram for formation of images in a concave mirror when the object is at centre of curvature C.

If x_1 be the size of the magnified image and x_2 the size of the diminished image in Lens Displacement Method, then the size of the object is :