With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible pumps. 2. Solar power can be used for running centrifugal pumps and not the ones with piston. Which of the statements given above is/are correct?

Statement 1: Incorrect. Solar-powered pumps can run both surface pumps and submersible pumps; solar pump systems are commonly available in both configurations for irrigation and drinking water use.

Statement 2: Incorrect. Solar power can run centrifugal pumps as well as positive-displacement/piston pumps; the choice depends on head, discharge, and application, not on any inherent solar limitation.

Therefore, neither 1 nor 2 is correct.