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Q. Give three applications of photoelectric cells.
(i) Photoelectric cells are utilized for reproducing sound in cinematography.
(ii) They are utilized for controlling the temperature of furnaces.
(iii) Photoelectric cells are utilized for automatic switching on and off the street lights.
(iv) Photoelectric cells are utilized in the study of temperature and spectra of stars.
(v) Photoelectric cells are as well used in obtaining electrical energy from sunlight during space travel.
(vi) These cells are utilized in instruments measuring light illumination.
(vii) These cells are utilized in opening and closing of door automatically.
(viii) Photoelectric cells are utilized in burglar alarm and fire alarm.
Germanium possesses (A) One valence electrons. (B) Two valence electrons. (C) Three valence electrons. (D) Four valence electrons. Ans: Germanium possess
do you provide help in computational physics matlab?
Physical interpretation of wave function : Einstein proposed a historic relationship between energy and mass using postulates of STR. The variation of mass with velocity has modif
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Q. What is microwave oven? How it works? Microwave oven It is utilized to cook the food in a short time. When the oven is manage the microwaves are generated which in turn
Introduction and Definition: The force between two particles was studied by Coulomb in 1785. He stated that the force of attraction or repulsion between two charged particle
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A mixture of methanol and water is to be separated in a new separation unit and you are required to provide a report detailing the design and costing of a distillation column with
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