Question

6
The covalent radius of sodium atom is
1.8 x 10-10 m while the wavelength of
visible light is approximately 500 x 10-4m.
Compare these lengths.​

Answer 1

Step-by-step explanation:

A man raises a box of mass 50 kg to a height

of 2 m in 20 s, while another man raises the same

box to the same height in 50 s.

(a) Compare : (i) the work done, and (ii) the power

developed by them.

(b) Calculate : (i) the work done, and (ii) the power

developed by each man. Take g = 10 N kg-

Ans. (a) (i) 1:1 (ii) 5:2.

(b) (i) 1000 J, 1000 J (ii) 50 W, 20 W

Answer 2

Answer:

The covalent radius of sodium atom is

1.8 x 10-10 m while the wavelength of

visible light is approximately 500 x 10-4m.

Compare these lengths.