PAN ಎಂದರೇನು? | 12 | ಪರಿಸರ ಸಮಸ್ಯೆಗಳು | ಜೀವಶಾಸ್ತ್ರ | ಸಂತ್ರ ಪ್ರಕಾಶನ | ಡೌಟ್ನಟ್

A pan of 2 kg is attached to a spring balance. When a weight of 3 kg is placed on the pan. The spring is stretched by 12 cm. Calculate the frequency with which the empty pan will oscillate.

A weight of 3 kg is placed on the pan of mass 1kg of a spring balance. IF the weight stretches the spring by 12 cm, find the frequency with which the empty pan oscillates.

Read the following passages carefully and answer the questions that follow. If you have been missing the once-familiar chirping of sparrows around your house, here's your chance to contribute to finding out why this common bird seems to have disappeared from cities across India. A two months long online survey called Citizen Sparrow was launched inviting responses from people on questions such as when they last sighted the bird and details about the area they live in. "It is an elementary step to gather information. We are encouraging people to report their experience, be it a drastic drop in sparrow count or a sudden spurt. These inputs will give us valuable leads to compile pan-India data," said Suhel Quader, evolutionary ecologist at the National Centre for Biological Sciences. The disappearance of the house sparrow, so widespread till recently that the Chinese Communist Party declared it a pest in 1958 and asked people to exterminate it, remains a great modern mystery world wide. In the UK, sparrows are estimated to have declined from over 12 million to 6 million, since the mid 70s. "The survey would give us the first baseline data about distribution of sparrows in the country. This would form the basis for further research," said Karthik K, project coordinator. The objective of involving ordinary citizens rather than experts comes with a purpose. “Almost everyone knows about sparrows. It is an attempt to reach out to people, asking them to share their stories and their understanding of these birds," said Quader. Participants in the survey would be asked to mark locations on a map and give information about their sparrow sightings, including sightings from last year and even earlier. Such information will enable a comparison of population of sparrows in different places and this is expected to point to particular threats or problems. The findings are intended to feed detailed studies investigating causes of decline and potential measures for the recovery of sparrow populations. The sparrow is an indicator of a trend. A number of other birds have also declined sharply in the past few decades. The survey would provide more clues about why these birds are disappearing. 'Pan-India' data would imply data

Study the following information carefully and answer the questions given below: Following are the conditions for granting advance of Rs. 10 lakhs to the farmers for purchasing tractor, by a Gramin Bank. The farmer must- (i) have at least five acres of cultivable land. (ii) be able to produce collateral of at least Rs. 8 lakhs. (iii) not be more than 50 years old as on 1.12.2005. (iv) not have any outstanding unpaid loan from the bank. (v) be able to produce a recommendation Jetter from the Panchayat Pradhan. In the case of a farmer w ho satisfies all other criteria except- (A) at (i) above, but is able to cultivate more than one crop in each piece of land, the case is to be referred to Chairman of the bank. (B) at (iv) above, but has Fixed Deposits of at least Rs. 4 lakhs with the bank, the case is to be referred to the General Manager of the bank. In each question below, detailed information of one farmer is given. You have to carefully study the information provided in each case and take one of the following courses of actions based on the information and conditions given above. You are not to assume anything other than the information provided in each question. All these cases are given to you as on 1.12.2005. You have to indicate your dedsion by marking answers to each question as follows : Ta pan Saha was born on 18th July, 1956. He has nine acres of cultivable land. He can produce a recommendation letter from the Panchayat Pradhan. H e can give collateral of more than Rs. 8 lakhs. He grows two crops on half of his total land.