Answer:
The image is produced 60 cm behind the mirror
The focal length of the mirror is 30 cm
Explanation:
u = Object distance = 20 cm
v = Image distance
f = Focal length
m = Magnification = 3

The image is produced 60 cm behind the mirror

The focal length of the mirror is 30 cm
Answer: K-core , 1s orbital
Explanation: Electron of Hydrogen atom has lowest energy
when it is in K core (1s-orbital)
The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
There is no lines that we can see. Also the rate of something has the biggest number or its either gonna be the longest line, yw .
Answer:
The light moves through glass, then air