34 Questions
What is the unit of Luminous Intensity?
candela
Who presented the wave theory of light?
Huygens
What is the dimension of angular velocity?
M L T-1
What is the unit of mass in the SI system?
Kilogram
In which year did Einstein present his theory of relativity?
1905
What is the dimension of strain?
[MLT2]
What is the potential energy of the raised mass?
316.5 J
What is the energy of the body at point C compared to point A?
equal to its energy at A
What happens to the potential energy between two protons when they are brought closer together?
it increases
What is the engine power of the car moving at 25 m/sec with a total frictional force of 1000 N?
250 joule sec-1
What is the power of a person weighing 500 N who can run up a flight of 40 stairs in 5 seconds?
3000 J sec-1
What is one horsepower equivalent to?
746 W
What is the direction of the streamlines the same as the direction of?
velocity
What is the condition known as when different streamlines cannot cross each other?
continuity condition
What is the path followed by a particle of fluid in a steady flow?
streamline
What is the time required to complete one vibration called?
time period
What is the force that opposes the applied force producing the displacement in a spring?
restoring force
What is the number of vibrations completed by a body in one second called?
frequency
In a double slit experiment, what do we observe?
Polarized fringes
What is the path difference dependent on when light is incident normally on a thin film?
All of the above
Which property of light does not change with the nature of the medium?
Frequency
How long does it take for light to reach the Earth from the Sun?
8 minutes
Who is credited with the discovery of the photoelectric effect?
Einstein
What is the shape of the wave front formed by a point source of light in a homogeneous medium?
Spherical
What is the term for a thing that emits its own light?
Luminous
In a double slit experiment, what happens if one of the two slits is covered?
No interference fringes are observed
What is the condition for destructive interference in Young's double slit experiment?
d sin θ = (m + ½)λ : (m = 0, ±1, ±2,...)
What is the position of the mth bright fringe in Young's double slit experiment?
ym = mλD/d
What is the separation between two successive bright fringes or dark fringes in Young's double slit experiment?
λD/d
What is the property not found in both sound and light waves?
Polarisation
What is the term for a lens that converges a beam of parallel rays to a point?
Converging lens
What is the term for the point where incident parallel rays converge or appear to diverge after passing through a lens?
Focus
What is the unit of power of a lens?
Dioptre
What is the power of a concave lens of 10 cm focal length?
-10 dioptre
Test your knowledge of physics concepts and historical events in the development of science. This quiz covers topics such as units of measurement, scientific theories, and contributions of famous scientists.
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