Answer:
Explanation:
Scientist use many techniques to analyze and interpret data. To interpret data they make tables and graphs of data which are two of the most useful techniques in data analysis.
Answer:
mm
Explanation:
As we know that

where
m represents the order of minimum
y represents the distance on the screen of the minimum from central axis
λ is the wavelength of the light
D is the distance between screen-to-slit
d represents the width of the slit
For first minima

For second minima


Answer: 140
Explanation: just multiply 7 x 20
Answer:
The key difference between diamagnetic, paramagnetic and ferromagnetic materials is that diamagnetic materials are not attracted to an external magnetic field, and paramagnetic materials are attracted to an external magnetic field whereas ferromagnetic materials are strongly attracted to an external magnetic field.