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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?

## 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)?

## 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

## BOARD QUESTIONS FROM WAVE OPTICS (CBSE/AISSCE)

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.

## CBSE Physics Class 12 Marks Distribution

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