As per Berlin’s formula, the length of wave in meters is given by (Where ’t’ is the period in seconds for two successive waves to pass the same section.)
A. 1.3412
B. 1.5612
C. 1.7412
D. 1.9412
Answer: Option B.
Explanation:
IS 14665 gives details about elevators. It specifies the number, capacityof elevator and number of floors to be served.
