Set 1 Flashcards
Arrange based on distance
Au, Lightyear, parsec
Parsec > Lightyear > Au
Work done by who is negative when a man lifts a bucket from the ground, Gravity or the man
Gravity
Compare displacement and direction of force
Does the angular momentum of a single particle moving with constant speed in a circular path change?
No
It remains same in magnitude and direction
L = m [v x r]
A planet in an elliptical orbit has areal velocity related to linear velocity as:
Areal velocity = r^2 ω
How does acceleration due to gravity vary with depth and height
Decreases in both cases
Relate KE, TE and PE of a satellite in orbit
-GMm/r —> U
-GMm/2r —> T
+GMm/2r —> K
If two satelites having different masses orbit around a planet, which parameter is same in both?
Velocity
List degrees of freedom of rigid, poly and nonrigid diatomic molecules
Polyatomic : 3T 3R V+
Non-Rigid : 3T 2R V1
Rigid : 3T 2T
When is flux positive
When field lines exit / move outward from the gaussian surface
In ferromagnetic material, below curie temperature, are the domains macro/microscopic?
Macro
Above curie temp, what happens to domain and magnetic character
Domains disintegrate, becomes paramagnetic
Transformer works on which principle
Mutual induction
Primary rainbow recall
Brighter rainbow
Since only 1 TIR
Red on top violet on bottom
Secondary rainbow
Dimmer than primary
Double TIR
Blue on top red on bottom
Phenomenon when white light splits into different colours, what is it called
Chromatic abberation
How is diffraction pattern radius in single slit diffraction dependent on
Hole size?
Sin (a) = 1.22 (wavelength) / (diameter)
With respect to optical length of a wave, which parameter changes when a wave enters another media and recall why
Wavelength changes as optical length changes.
Can a proton decay into a neutron?
Yes.
Only inside the nucleus
What does a neutron decay into
Electron, proton and anti-neutrino
When an electron goes from lower to higher orbital what happens to total, kinetic and potential energy
Kinetic energy decreases
Potential and Total energy increases
Photoelectric effect was proved by wave or particle theory of light
Particle theory
Are the volume and mass number of an atom related
Yes they are linearly related
What is heavier
Proton or neutron
Neutron
