User Rajdeep Sindhu

12 votes

4 answers

3k views

Why doesn't a dimensional inconsistency arise while defining a physical quantity in multiple ways?

kinematics dimensional-analysis

asked Jul 27, 2020 at 4:47

8 votes

1 answer

1k views

Proof that all rays parallel to the principal axis meet at the focus during reflection from a concave mirror

optics geometric-optics

asked Jul 1, 2020 at 3:52

4 votes

2 answers

411 views

Approaching physics using ordinary analysis rather than nonstandard analysis

mathematical-physics calculus

asked Aug 15, 2020 at 18:29

3 votes

2 answers

115 views

Why is the charge of an electron taken to be the negative of the charge of a proton and vice versa?

electromagnetism electrostatics electricity

asked Aug 21, 2020 at 9:41

3 votes

1 answer

176 views

Can a third kind of charge exist? [duplicate]

electromagnetism charge

asked May 15, 2020 at 11:44

2 votes

2 answers

568 views

Which of these concave lenses has a greater power

optics lenses

asked May 21, 2020 at 6:58

2 votes

1 answer

88 views

Uniqueness of final velocities in law of conservation of momentum

newtonian-mechanics momentum conservation-laws

asked Apr 19, 2020 at 10:20

2 votes

1 answer

83 views

Uniqueness of refractive index

optics refraction

asked Apr 22, 2020 at 8:08

2 votes

1 answer

94 views

Regarding difference in dimensions of a physical quantity in different unit systems [duplicate]

electromagnetism units dimensional-analysis si-units unit-conversion

asked Jul 20, 2020 at 11:44

2 votes

1 answer

42 views

In the given scenario, is the ball doing some work?

newtonian-mechanics work

asked Jun 25, 2020 at 10:33

2 votes

2 answers

186 views

How is the magnitude of force exerted by the external agent equal to the electrostatic force when talking about electric potential energy?

electromagnetism electrostatics

asked Jun 29, 2020 at 5:21

1 vote

1 answer

150 views

Why do we use a calculus based approach for calculating the work done when a charge moves a certain distance in a system of two charges?

electrostatics work potential-energy coulombs-law calculus

asked Jun 15, 2020 at 7:24

1 vote

2 answers

581 views

Why is the electric potential at a distance of $R$ from a point charge $q$ equal to $\frac{-q}{4\pi\varepsilon_0 R}$

electrostatics potential work conventions coulombs-law

asked Jul 3, 2020 at 8:44

1 vote

2 answers

135 views

The final velocity of a positive test charge after being repelled to infinity by another positive charge

electrostatics coulombs-law

asked Jul 10, 2020 at 7:05

1 vote

0 answers

56 views

How do we know that we have taken all factors into consideration while deriving Coulomb's Law?

electrostatics gauss-law coulombs-law

asked Aug 26, 2020 at 1:28

1 vote

1 answer

575 views

Does the speed of light depend on mass density? [duplicate]

optics visible-light refraction

asked Apr 22, 2020 at 11:04

1 vote

2 answers

726 views

How does the car analogy explain refraction of light?

optics visible-light refraction

asked Apr 27, 2020 at 10:49

1 vote

1 answer

137 views

What is aperture of a lens?

optics terminology refraction lenses

asked Apr 29, 2020 at 6:42

1 vote

3 answers

101 views

Is this formula I derived for net acceleration correct? [closed]

newtonian-mechanics newtonian-gravity acceleration

asked May 27, 2020 at 14:00

1 vote

2 answers

111 views

How did Coulomb know that there was no other factor that could affect the electrostatic force between two particles?

electrostatics coulombs-law

asked May 30, 2020 at 7:46

0 votes

1 answer

152 views

Is this derivation of Coulomb's Law correct?

electrostatics charge coulombs-law

asked Jun 3, 2020 at 7:44

0 votes

2 answers

75 views

What would happen if a body possessing a charge $(-1) \text { e}$ is brought into contact with an electrically neutral object?

electrostatics electrons charge

asked May 25, 2020 at 9:17

0 votes

1 answer

66 views

What does this statement mean?

electrostatics electricity charge friction

asked May 16, 2020 at 9:17

0 votes

1 answer

40 views

How and how long will the metallic ball move? [closed]

electromagnetism charge

asked May 16, 2020 at 10:04

0 votes

2 answers

87 views

Why do electrons in a conductor not connected to a power source not fly away due to repulsion?

electrostatics electrons charge

asked May 16, 2020 at 10:48

0 votes

2 answers

96 views

Did I just get an electric shock?

electricity

asked Apr 29, 2020 at 11:22

0 votes

1 answer

322 views

In Ohm's Law, why do we not take the constant of proportionality as $\dfrac{1}{R}$?

electric-current electrical-resistance voltage conductors

asked Apr 29, 2020 at 13:47

0 votes

1 answer

66 views

What do we actually mean by parallel rays when talking about reflection from a concave mirror? [duplicate]

optics reflection geometric-optics

asked May 5, 2020 at 11:01

0 votes

5 answers

263 views

Interpreting the vector addition of acceleration

vectors

asked Jul 28, 2020 at 4:39

0 votes

2 answers

216 views

A confusion regarding the head to tail method for vector addition

kinematics vectors

asked Aug 2, 2020 at 6:30

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31 Questions

Why doesn't a dimensional inconsistency arise while defining a physical quantity in multiple ways?

Proof that all rays parallel to the principal axis meet at the focus during reflection from a concave mirror

Approaching physics using ordinary analysis rather than nonstandard analysis

Why is the charge of an electron taken to be the negative of the charge of a proton and vice versa?

Can a third kind of charge exist? [duplicate]

Which of these concave lenses has a greater power

Uniqueness of final velocities in law of conservation of momentum

Uniqueness of refractive index

Regarding difference in dimensions of a physical quantity in different unit systems [duplicate]

In the given scenario, is the ball doing some work?

How is the magnitude of force exerted by the external agent equal to the electrostatic force when talking about electric potential energy?

Why do we use a calculus based approach for calculating the work done when a charge moves a certain distance in a system of two charges?

Why is the electric potential at a distance of $R$ from a point charge $q$ equal to $\frac{-q}{4\pi\varepsilon_0 R}$

The final velocity of a positive test charge after being repelled to infinity by another positive charge

How do we know that we have taken all factors into consideration while deriving Coulomb's Law?

Does the speed of light depend on mass density? [duplicate]

How does the car analogy explain refraction of light?

What is aperture of a lens?

Is this formula I derived for net acceleration correct? [closed]

How did Coulomb know that there was no other factor that could affect the electrostatic force between two particles?

Is this derivation of Coulomb's Law correct?

What would happen if a body possessing a charge $(-1) \text { e}$ is brought into contact with an electrically neutral object?

What does this statement mean?

How and how long will the metallic ball move? [closed]

Why do electrons in a conductor not connected to a power source not fly away due to repulsion?

Did I just get an electric shock?

In Ohm's Law, why do we not take the constant of proportionality as $\dfrac{1}{R}$?

What do we actually mean by parallel rays when talking about reflection from a concave mirror? [duplicate]

Interpreting the vector addition of acceleration

A confusion regarding the head to tail method for vector addition