1. 1.634
2. 1.234
3. 0.936
4. 0.548
0.548
1. N along and not by d
2. d along and not by N
3. the product (Nd)
4. the ratio (N/d)
the product (Nd)
1. 22.9dB
2. 30 dB
3. 40 dB
4. 50 dB
22.9dB
1. 1.2MHz
2. 2.4MHz
3. 0.6MHz
4. 1.386MHz
1.386MHz
1. 51.3 degree
2. 11.4 degree
3. 102.6 degree
4. 22.9 degree
11.4 degree
1. 6 ×106 m/see
2. 6 ×10-7m/sec
3. 6×108m/sec
4. 6 ×10-8m/sec
6 ×106 m/see
1. 25m
2. 30m
3. 40m
4. 35m
30m
1. 0.475 m
2. 0.575 m
3. 0.675 m
4. 0.775 m
0.675 m
1. 2
2. 1
3. 1/2
4. none of these
2
1. 2/3
2. 4/3
3. 1/3
4. 3
2/3