Convention of Signs

Minamata Convention is signed to tackle the issue of:

State and explain the New Cartesian Sign Convention for spherical lenses.

Image Formation By Concave Lens|Sign Convention For Spherical Lenses|Lens Formula|Magnification (m)|OMR

According to the "New Cartesian Sign Convention" for mirros, when sigh has been given to the focal length of : (i) a concave mirror ? (ii) a convex mirror ?

Chronologically arrange the following treaties/conventions signed between the Marathas and the British (starting with the earliest): 1. Treaty of Salbai 2 .Treaty of Purandar 3. Convention of Wadgaon 4. Treaty of Surat Select the correct answer using the code given below :

In which year did the convention on wetlands, the 'Ramsar Convention', come into force in India?