Which scientist does not belong to Germany?
Anonymous Quiz
14%
Henirich hertz
35%
Vasco digma
25%
Robert hook
26%
Neil bhor
🤩1
According to Einstein’s theory, mass and energy are related as
Anonymous Quiz
32%
E=mc
24%
E=m/c^2
37%
E=mc^2
8%
E=m/c
😁5
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The increasing order (lowest first) for the values of e/m (charge/mass) for
Anonymous Quiz
19%
N,p,e,a
36%
P,e,n,a
40%
N ,a,p,e
6%
N,e,a,p
🥰2
A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm, the other is at:
Anonymous Quiz
8%
518
42%
1035
33%
325
17%
743
😁1
Which of the following element has least number of electrons in its M-shell?
Anonymous Quiz
33%
K
33%
Mn
21%
Ni
13%
Si
🤩3
In the ground state, an element has 13 electrons in its M-shell. The element is_____
Anonymous Quiz
15%
Copper
45%
Chromium
24%
Nickel
16%
Iron
🤩3👍1
In the Bohrs model of the hydrogen atom, the ratio of the kinetic energy to the total energy of the electron in a quantum state n is:
Anonymous Quiz
20%
1
48%
-1
29%
2
3%
-2
👍1🥰1
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The displacement in metres of a body varies with time t in second as y = t2 – t – 2. The displacement is zero for a positive of t equal to
Anonymous Quiz
16%
1
45%
2
29%
3
10%
4
🥰1
A boy starts from a point A, travels to a point B at a distance of 3 km from A and returns to A. If he takes two hours to do so, his speed is
Anonymous Quiz
29%
3
31%
0
33%
2
7%
1
😁4
A 180 metre long train is moving due north at a speed of 25 m/s. A small bird is flying due south, a little above the train, with a speed of 5 m/s. The time taken by the bird to cross the train is
Anonymous Quiz
19%
10
42%
12
27%
9
12%
6
🔥5😁1🤩1
Which one of the following is the unit of velocity?
Anonymous Quiz
10%
Kilogram
70%
M/s
14%
Meter
6%
Gram
🥰1😁1
body starts from rest and travels with an acceleration of 2 m/s². After t seconds its velocity is 10 m/s . Then t is
Anonymous Quiz
22%
10
47%
5
15%
6
15%
20
🔥1🥰1🤔1
The change in velocity corresponding to the time interval within which the change has accelerated is known as _________________
Anonymous Quiz
20%
Speed
37%
Instant velocity
17%
Uniform motion
26%
Average accleration
👍2