A particle is moving in a circular path of radius r. The displacement after half a circle would be
Anonymous Quiz
23%
Zero
39%
Οr
33%
2r
5%
0
π1
Sound of frequency below β¦β¦β¦β¦β¦ is called infrasonic sound.
Anonymous Quiz
76%
20hz
8%
31hz
10%
40hz
6%
14hz
Speed of sound β¦β¦β¦β¦β¦ with increase in temperature.
Anonymous Quiz
64%
Increase
36%
Decrease
Greater the amplitude of vibration of source the greater is β¦β¦β¦β¦β¦ of sound.
Anonymous Quiz
25%
Speaker
62%
Loudnees
12%
Sound
1%
None
The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
Anonymous Quiz
23%
13
50%
10
21%
14
6%
16
β€1
How many electrons are present in M-shell of an element with atomic number 20?
Anonymous Quiz
8%
5
56%
8
19%
12
16%
18
π1
The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
Anonymous Quiz
26%
13
41%
10
27%
14
6%
16
π1
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Isobars do not differ in the number of
Anonymous Quiz
25%
Nucleus
41%
Nucleons
21%
Proton
13%
Electron
π1
Neon and chlorine have atomic numbers 10 and 17 respectively. Their valencies will be β¦β¦β¦β¦.. and β¦β¦β¦β¦β¦. respectively.
Anonymous Quiz
15%
1 and 0
60%
0 and 1
18%
1 and 1
7%
None
π2