Category Archive: ANSWERS TO QUESTIONS FROM VISITORS

Sep 16

A Problem from Optics – Reflection of light

Convex and concave mirrors have same radii of curvature R. The distance between the mirrors is 2R. At what point on the common optical axis of the mirrors should a point source of light A be placed

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Permanent link to this article: http://www.plustwophysics.com/a-problem-from-optics-reflection-of-light/

Feb 29

Calculating charge on a body with excess of electrons

How would I calculate the charge on a small sphere with an excess of 5.0 x 10 14 electrons?

Asked Kaitlin Thomas

Answer:

We know that charge on an electron is (-) 1.6 x 10-19 C

If the sphere has 5.0 x 10

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Permanent link to this article: http://www.plustwophysics.com/calculating-charge-on-a-body-with-excess-of-electrons/

Jan 31

How was your Physics Practical Examination?

Hello students!

It’s the time of AISSCE Practical Examination.

How was your Physics Practical Examination and Viva?

Which questions were asked to you?

Which were the experiments and activities you

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Permanent link to this article: http://www.plustwophysics.com/how-was-your-physics-practical-examination/

Jan 30

Random collection of Physics Viva Questions

State the Principle of a potentiometer. (The students say that potential drop is proportional to length but the constant quantities are not mentioned) How can we increase the sensitivity

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Permanent link to this article: http://www.plustwophysics.com/random-collection-of-physics-viva-questions/

Nov 22

Which way is better for giving AIEEE exam? ONLINE or OFFLINE.

Which way is better for giving AIEEE exam? ONLINE or OFFLINE.

-Yash asked –

Answer:

I would personally recommend online. But the choice is up to you.

Please follow the following check to decide. Try

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Permanent link to this article: http://www.plustwophysics.com/which-way-is-better-for-giving-aieee-exam-online-or-offline/

Oct 10

Motion in a vertical circle and conservation of energy

A stone  tied to a string of length l is whirled around a vertical circle with the other end of the string at the centre. At a certain instant of time the stone is at the lowest position and has a

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Permanent link to this article: http://www.plustwophysics.com/motion-in-a-vertical-circle-and-conservation-of-energy/

Sep 11

Why protons attract inside a nucleus?

What is the reason for proton- proton attraction inside the nucleus according to nuclear physics? (Sanjeev Asked)

Answer: Inside the nucleus where the nucleons are very close to each

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Permanent link to this article: http://www.plustwophysics.com/why-neutrons-attract-inside-a-nucleus/

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