observation experimentation

The adjacent graph (V-I) shows the above observation. Now if the potential difference between the plates is made zero still there is a photocurrent, as shown by the intercept on the y-axis. If the potential of the collector is made negative with respect to the cathode. Even then, a photoc..

Overview of methods of data collection: Census Sample survey Experiment Observational study Planning and conducting surveys: Characteristics of a well-designed and well-conducted survey Populations, samples, and random selection Sources of bias in sampling and sur..

Select each study as being either observational(O) or experimental(E). I. Children's behaviour in a play ground (aggression). II. Violence in children's TV programmes. III. Does fluoride in the water supply decrease the frequency of dental cases in a community compared to a simi..

A dynamic environment of matter and material surrounds man. Since his birth he has been exposed to these changing surroundings. His curiosity to understand his surroundings and the events occurring around him, has led him to systematically enquire and collect information through experiments a..

A dynamic environment of matter and material surrounds man. Since his birth he has been exposed to these changing surroundings. His curiosity to understand his surroundings and the events occurring around him, has led him to systematically enquire and collect information through experiments a..

Introduction - A dynamic environment of matter and material surrounds man. Since his birth he has been exposed to these changing surroundings. His curiosity to understand his surroundings and the events occurring around him, has led him to systematically enquire and collect information through expe..

Sometimes, even if the error is known, it cannot be corrected due to imperfection in the experimental arrangement. e.g., Loss of heat due to radiation in calorimetry. These errors always exist, but observations can be correcte..

Light has been regarded as waves to explain the phenomena of reflection, refraction, diffraction etc. However in 1905, Albert Einstein suggested that light has a dual character, which means, it can behave as a particle as well as a wave. It was observed that some of the experim..

Atomic Structure and Chemical Bonding - Light has been regarded as waves to explain the phenomena of reflection, refraction, diffraction etc. However in 1905, Albert Einstein suggested that light has a dual character, which means, it can behave as a particle as well as a wave. It was observedh..