Home › NEET UG › Physics › Ray Optics and Optical Instruments › The mirror equation (relating object distance u,…
The mirror equation (relating object distance u, image distance v, focal length f) is:
A1/u + 1/v = 1/f
B1/v − 1/u = 1/f
Cv/u = f
Du + v = f
Answer & Solution
Correct answer: A. 1/u + 1/v = 1/f
**Mirror equation: 1/v + 1/u = 1/f** (Cartesian sign convention). All three quantities take signs per the convention. Magnification m = −v/u.
Related questions
The phenomenon by which the apparent position of a star near the horizon appears slightly An object is placed at the FOCUS of a concave mirror ($u = f$, both negative). The image fWhen light travels from one medium to another, which property of the wave REMAINS UNCHANGELight passing through a PRISM is dispersed because different colours of light haveA converging lens of focal length $20\,\text{cm}$ produces a real image at $30\,\text{cm}$Optical fibres use TOTAL INTERNAL REFLECTION to transmit light over long distances. The MATwo thin lenses of powers $+5\,\text{D}$ and $-3\,\text{D}$ are placed in CONTACT. The totThe POWER of a lens (in diopters, D) is defined as