Class XI Physics Practical Exam Viva Voce

Hi Students! The practical examinations are accompanied by viva voce by the external/internal examiner to ensure the genuineness of their work and to analyse the understanding of the subject by the students. So it is important to prove yourself by performing well in the viva voce. The following questions will be of some help to prepare well for … Continue reading Class XI Physics Practical Exam Viva Voce

Environmental Science Lab

What is Environmental Science Lab? Wikipedia says- Environmental science is an interdisciplinary academic field that integrates physical and biological sciences, (including but not limited to Ecology, Physics, Chemistry, Biology, Soil Science, Geology, Atmospheric Science and Geography) to the study of the environment, and the solution of environmental problems. Environmental science provides an integrated, quantitative, and … Continue reading Environmental Science Lab

What is diamagnetism ?

What is diamagnetism? (Shan asked) Diamagnetism is the property of an object which causes it to create a magnetic field in opposition to an externally applied magnetic field, thus causing a repulsive effect. (Wikipedia) Please refer to the following li...

A question on Quantum Entanglement

I have read a lot about quantum mechanics but have a query. using an entangled photon for this question. If you can’t measure an entangled photon without affecting it’s entanglement then how do we know it was even entangled to start with and not just always a certain “spin”, either up or down. How can [...]

How to describe momentum physically ?

Kiran asks: “How do you describe momentum physically by not in definitions like product of mass and velocity?” Answer: Momentum is defined as “Mass in Motion” or “The quantity of motion“. Momentum is a measure of the “effect” a moving body can produce. It is a measure of the “effort” required to bring a body to [...]