Draw a labelled ray diagram for the image formation by a concave mirror when an object is placed between its centre of curvature and focus.
When an object is placed between the centre of curvature (C) and the focus (F) of a concave mirror, the image formed has the following characteristics:
- The image is formed beyond the centre of curvature (C).
- The image is real and inverted.
- The image is magnified (larger than the object)
If the given figure shows the graph of polynomial \( y = ax^2 + bx + c \), then:
In the given figure, \( PQ \) and \( PR \) are tangents to the circle such that \( PQ = 7 \, \text{cm} \) and \( \angle RPQ = 60^\circ \).
The length of chord QR is: