Magnification = \(\frac{\text{Length of camera}}{\text{distance of object from pin hole}}\)
m = \(\frac{12}{60}\)
= 0.2
Also magnification m = \(\frac{\text{Height of image}}{\text{Height of object}}\)
∴ Height of image = m × height of object
= 0.2 × 70
= 14cm