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Monthly Archives: October 2016


Diving birds often dive straight down, Why?

Diving birds often dive straight down if they want to catch a fish. explain why?

Asked Sara

Displacement in the last one second

a ball is thrown vertically upwards with a given velocity u such that it rises for T seconds(T>1),what is distance traveled by the ball during the last one second of ascent(in metres)?

Mani Asked.

Question on De Broglie Wavelength

A particle moving with certain velocity has the de-broglie wavelength of 1 Angstrom. For particle B with mass 25 % and velocity 75 % of A. calculate de-broglie wavelength

Asked Ravi Tiwari


Download the collection of questions asked in previous CBSE board exams from the chapter Wave Optics.

Practising the previously asked questions is a good idea to prepare for the exams.

[gview file=”http://www.askphysics.com/wp-content/uploads/2016/10/Wave-Optics-Revision-Based-on-Board-Questions.pdf”]

CBSE Physics Class 12 Marks Distribution

It is always better to know the chapterwise marks distribution before you start studying.

[gview file=”http://www.askphysics.com/wp-content/uploads/2016/10/Physics-Class-12-2017-1.pdf”]

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