Q1/ Choose the correct answer: 1. The function of a solar collector is to convert: (A) Solar energy into electricity. (C) Solar energy into thermal energy. 2. Most of the solar radiation received on earth surface lies within the range of: (B) 0.38 to 0.78 microns. (D) Non of these. (A) 0.2 to 0.4 microns. (C) 0 to 0.38 microns. 3. Flat plate collector absorbs: (A) Direct radiation only. (C) Both direct and diffuse. (B) Solar energy into radiation. (D) Solar energy into heat storage. (B) Diffuse radiation only. (D) All type of light. 4. Main applications of solar energy may be considered in the following categories: (A) Solar electric application. (B) fuel from biomass. (C) direct thermal applications. (D) both (A) and (B). 6. A pyranometer is used for measurement of: (A) Direct radiation only. (C) Direct as well as diffuse radiation. 5. Temperature attained by a flat-plate collector is of the: (A) Order of about 90 C. (C) above 150 C. (B) Range of 100 C to 150 C. (D) None of the above. (B) Diffuse radiation only. (D) All type of light. 7. Is a solar collector, the function of transparent (A) Transmit solar radiation only. (C) To decrease the heat loss from collector to atmosphere. cover is to: (B) protect the collector from dust. (D) Prevent rain only.