Answer:
B. c = fλ
Step-by-step explanation:
Given formula,
f equals c over lambda,
Where, f = frequency,
c = wave speed,
λ = wavelength,
By the above formula,
( By cross multiplication ),
Hence, the required formula for c,
Option 'B' is correct.
if f = c/lambda
then c = f × lambda
For the triangles to be congruent, TS = WV (2x + 8 = 16)
Therefore 2x = 8 and x = 4.
1. no
2. yes
3. no (t f)
4.yes
5.no
the correct answer is d