Refer to the video below for explanation. When a ball dropped and then it re-bounces, the motion varies. This video will cover how the...

Characteristics of mirror image: • virtual (an image which cannot be formed on a screen) • same size as object • laterally inverted •...

Internal energy of a substance is the sum of kinetic energy and potential energy of the molecules. kinetic energy is directly...

In the syllabus, we are required to understand the orders of magntiude of various objects. Though we may no need to memorise the exact...

2002PPQ38, 2003PPQ38, 2005PPQ37, 2006PPQ38, 2007PPQ39 Answer: Option B Answer: Option D Answer: Option B Answer: Option C Answer: Option...

2005SPQ20, 2006PPQ40, 2005PPQ38, 2003PPQ39 Answer: Option A Answer: Option D Answer: Option B Answer: Option C Answer: Option B Answer:...

Alpha particle is a helium nucleus which is positive charged . Beta particle is an electron which is negative charged . Gamma ray has...

Half-life of a radioactive nuclide is the time taken for half the nuclei of that nuclide in any sample to decay . (time taken for the...

When question states that radius or diameter is increased by 3 times, that note that cross-sectional area does not increase by 3 times....

The video below demonstrates that water will find its own level. An question requires this concept: An apartment block receives water...

We have learned that silver smooth reflective surface is a poor absorber , poor emitter or a good reflector of infra-red radiation. How...