Introduction: To study the nature of image formed in pin hole camera. ii) Hypothesis: To learn on what principle the pin hole camera works

iii) Materials: List the name of the materials used for the project.

iv) Procedure: Write the method of making the pin hole camera.

v) Observation: What did you observe on the screen?

vi) Conclusion: What did you learn? What conclusion can you get from the result?

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)