Tần số ngưỡng của một kim loại có giá trị X. Nếu tần số của chùm sáng chiếu đến bề mặt katot tăng từ 2X đến 4X thì cường độ dòng
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To develop this problem we will use the concepts related to Speed in a string that is governed by Tension (T) and linear density (µ)
Our values are given as:
Replacing we have that the velocity is
From the theory of wave propagation the average power wave is given as
Where,
A = Amplitude
Angular velocity
Replacing,
Therefore the amplitude of the wave should be 0.0165m
Answer:
-252.52
Explanation:
L = Distance between lenses = 10 cm
D = Near point = 25 cm
= Focal length of objective = 0.9 cm
= Focal length of eyepiece = 1.1 cm
Magnification of a compound microscope is given by
The angular magnification of the compound microscope is -252.52