When was the first solar cell invented?
A) 1950
B) 1954
C) 1965
D) 1952
Correct Answer:
Verified
Q14: There are four types of Water pumps.
A)True
B)False
C)none
D)all
Q15: The output of the Solar panel is
Q16: Which of the relationship is correct in
Q17: Which of the relationship is correct in
Q18: Who made the first solar cell?
A)Gerald Pearson
B)Tim
Q20: Which of the following is an advantage
Q21: Which of the following is the voltage
Q22: Long distance railways use which of the
Q23: The speed of a locomotive is controlled
Q24: Main traction systems used in India are,
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