22. How should an article be ended? a. thanking the audience b. greeting the audience C. with a suitable conclusion d. all of the above​

Answer:

Man has learnt to communicate in a (a)

variety of ways.There are examples of (b) communities using whistle or tunes to express(c) their ideas without bringing in words at all. (d)

The current flowing in circular path of electron with frequency f is I=fe

But f=ω2π ∴I=ωe2π

but ω=vr

∴I=ve2πr

m=IA

=ve2πr×πr2

=12ver

=12×2106×1.6×10−19×5.3×10−11

=8.48×10−24Am2

Angular momentum L=pr

−mevr (wherep=mv)

L=9.1×10−31×2×106×5.3×10−11

=96.46×10−36

∴L=9.65×10−35 Nms

Answer:

An electron in an atom is revolving round the nucleus in a circular orbit of radius 5.3 x 10^-11m with a speed of 3×10

^6 m/s. Find the angular momentum of electron.

Answer:

Explanation:

About note making:

• Effective note making is important to any student.
• The points in a note should be organised in a sequential manner.
• Only relevant information should be included.
• It is important to use minimum number of words. Avoid the usage of complete sentences.
• Hence the correct option is: c) While writing notes always avoid using complete sentences.

D) All of these is the correct answer

About note making:

• Effective note making is important to any student.

• The points in a note should be organised in a sequential manner.
• That is note taking should not be just a process of writing down random words and phrases.
• The matter included should be sensible and easily understandable.
• Only then will it be useful for further reference.
• Hence the correct option is: d) Notes taking makes sense only when it is useful for later reference. Hence notes should be written in a sequential, sensible, legible and clear manner.