Question

Question No. 70
20 m ऊँचे एक बिजली के खंभे की छाया की लंबाई 20/3 m है, मैदान पर, तो उसी समय पर सूर्य का उन्नयन कोण
ज्ञात कीजिए।
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Answer 1

Answer:

The root mean square speed of a gas is given by

M

3RT

where T is the temperature of gas

M is the molecular weight of gas.

When oxygen molecules dissociate into oxygen atoms, the molecular weight of gas halves.

Hence T

′

=2T,M

′

=M/2

Hence

v

v

′

=

T/M

T

′

/M

′

=

1

4

=2

⟹v

′

=2v