state sign convention used to measure length of image and object
when the distance we measure opposite to the direction of light then we take this as negative and vice versa.
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2. What is Democracy? Why Democracy ? o Maximum Marks: Score Multiple Choice Questions 1. Tick ) the correct option. 0 In which of the following countries Govemment is formed by their Communist Party? (a) Russia (b) Japan (c) Burma (d) China (10) In which of the following countries women do not have the right to vote? (a) China () (b) Saudi Arabia (d) Afghanistan (c) Estonia (ii) Pakistan under...