Question

4. The quantum number which explains about size and energy of the orbit or shell is
b)
c)
m
m ,
5. The focal length of the lens depends upon
a) Atmospheric temperature b) air pressure C) surrounding medium d) Humidity
6. Power of lens is 2D. its focal length is
a) 5cm
b) 25cm
c) 50mm
d) 50cm​

Answer 1

Answer:

4 -n is the quantum number. 5-c 6-answe is 0.5 mm which is not in option