c.v Raman was awarded nobel prize for______
Answers
Explanation:
Mailed Questionnaire Method
• Investigator sends a questionnaire to the informant by mail and requests to fill and return
the same. Email and SMS are used.
• A Questionnaire consists of a list of questions, with blank spaces provided for writing
answers.
INVESTIGATOR → INFORMANT (by mail)
• This method is suitable when –
➢ Area of investigation is large
6. Questionnaires Filled by Enumerators
• Enumerator is a person who collects data for the investigator.
• Enumerator prepares a list of questions and asks these questions to the informant and note
down their replies.
• Enumerator should be tactful, well trained and unbiased.
• This method is suitable when –
➢ Area of investigation is large.
➢ Respondents are literate.
➢ High Accuracy is needed
➢ Originality of investigation has to be maintained.
➢ Detailed information has to be collected.
QUALITIES OF A GOOD QUESTIONNAIRE-
➢ A Cover Letter should be attached. It should briefly explain the Objective and Scope of the survey.
➢ A Questionnaire must provide necessary instructions for filling the questionnaire.
➢ The number of questions should be as small as possible.
➢ The questions should be clear, simple and short.
➢ Questions should be logically arranged.
➢ Proper Division and sub division of questions under different heads and subheads should be done.
➢ A questionnaire should look attractive.
➢ Before doing survey using a questionnaire, a test must be done with few respondents to check the
accuracy.
➢ It should avoid personal questions, calculations, leading questions, double negatives.
The Nobel Prize in Physics 1930 was awarded to Sir Chandrasekhara Venkata Raman "for his work on the scattering of light and for the discovery of the effect named after him."