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
. are the atoms containing same number of neutrons.
Anonymous Quiz
45%
Isotope
30%
Isotone
18%
Isobar
7%
None
π2
The gravitational force between two objects is F. If masses of both objects are halved without changing the distance between them, then the gravitational force would become
Anonymous Quiz
42%
F/2
35%
F/4
18%
2F
5%
None