JS02 Physics
JS02 Physics Challenge
Test your knowledge of physics with our JS02 Physics Challenge! This quiz includes 11 carefully crafted questions that will challenge your understanding of various physical concepts.
Whether you're a student, teacher, or physics enthusiast, you'll find this quiz both engaging and informative. Here are some topics covered:
- Gravitational Forces
- Motion and Speed
- Energy in Atoms
- Electromagnetic Waves
Two spheres of masses m and M are situated in air and the gravitational force between them is F . The space around the masses is now filled with a liquid of specific gravity 3. The gravitational force will now be
F
F/3
F/6
3F
N/A
At a height h above the surface of earth, the change in value of g is same as that at a depth x below the surface on the earth. Both x and h are very small in comparison to the radius of the earth. Then,
X = 2h
X = h
X = h/2
X= 4h
N/A
The speed of a swimmer in still water is 20 m/s. The speed of river water is 10 m/s and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path, the angle at which he should make his strokes w.r.t. North is given by :
60, west
30, west
45, west
0
N/A
A 150 m long train is moving with a uniform velocity of 45 km/h. The time taken by the train to cross a bridge of length 850 meters is
56 sec
68 sec
80 sec
92 sec
N/A
A car runs at constant speed on a circular track of radius 100 m taking 62.8 s on each lap. What is the average speed and average velocity on each complete lap? (π=3.14)
Speed 10 m/s, Velocity 0 m/s
Speed 0 m/s, Velocity 10 m/s
Speed and Velocity are 10 m/s
Speed and Velocity are 0 m/s
N/A
The total energy of an electron in an atom in an orbit is −3.4eV . Its kinetic and potential energies are, respectively:
3.4 eV, 6.8 eV
-3.4 eV, 3.4 eV
6.8 eV, -6.8 eV
3.4 eV, -6.8 eV
N/A
The maximum and minimum magnitudes of the resultant of two forces are 17 newton and 7 newton respectively, if these two forces are acting at right angle to each other, then the value of resultant of these forces in newton will be:
10 N
12 N
13 N
24 N
N/A
If the electron in the hydrogen atom jumps from third orbit to second orbit, the wavelength of the emitted radiation is ?
36R/5
5R/36
5R/6
R/6
N/A
A ball is dropped from a building 25 m high. What is the distance covered by the ball in the last second.
7 m
3 m
5 m
9 m
N/A
What is the gravitational potential of a body inside a hollow sphere? (r= the point from the centre where the potential is measured, and R= Radius of earth)
-GM/r
-GM/(R+r)
-GM/(R-r)
Zero
N/A
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