Depth of penetration does not depend on frequency. ?->(Show Answer!)

1. Depth of penetration does not depend on frequency.

Write Comment

Comments

Tags

Show Similar Question And Answers

QA->The pressure at the bottom of a liquid tank does not depend on which area?....

QA->The escape velocity from the surface of the earth does not depend on which body?....

QA->Moho discontinuity lies at the depth of approximately how many kilometers?....

QA->Which is the greatest known ocean depth (which lies in the Pacific Ocean)?....

QA->Moho discontinuity lies at the depth of approximately howmany kilometers?....

MCQ->The Depth of penetration of EM wave in medium having conductivity σ at a frequency of 1 MHz is 25 cm. The depth of penetration at a frequency of 4 MHz will be....

MCQ-> The passage below is accompanied by a set of six questions. Choose the best answer to each question. During the frigid season... it's often necessary to nestle under a blanket to try to stay warm. The temperature difference between the blanket and the air outside is so palpable that we often have trouble leaving our warm refuge. Many plants and animals similarly hunker down, relying on snow cover for safety from winter's harsh conditions. The small area between the snowpack and the ground, called the subnivium... might be the most important ecosystem that you have never heard of.The subnivium is so well-insulated and stable that its temperature holds steady at around 32 degree Fahrenheit (0 degree Celsius). Although that might still sound cold, a constant temperature of 32 degree Fahrenheit can often be 30 to 40 degrees warmer than the air temperature during the peak of winter. Because of this large temperature difference, a wide variety of species...depend on the subnivium for winter protection.For many organisms living in temperate and Arctic regions, the difference between being under the snow or outside it is a matter of life and death. Consequently, disruptions to the subnivium brought about by climate change will affect everything from population dynamics to nutrient cycling through the ecosystem.The formation and stability of the subnivium requires more than a few flurries. Winter ecologists have suggested that eight inches of snow is necessary to develop a stable layer of insulation. Depth is not the only factor, however. More accurately, the stability of the subnivium depends on the interaction between snow depth and snow density. Imagine being under a stack of blankets that are all flattened and pressed together. When compressed, the blankets essentially form one compacted layer. In contrast, when they are lightly placed on top of one another, their insulative capacity increases because the air pockets between them trap heat. Greater depths of low-density snow are therefore better at insulating the ground.Both depth and density of snow are sensitive to temperature. Scientists are now beginning to explore how climate change will affect the subnivium, as well as the species that depend on it. At first glance, warmer winters seem beneficial for species that have difficulty surviving subzero temperatures; however, as with most ecological phenomena, the consequences are not so straightforward. Research has shown that the snow season (the period when snow is more likely than rain) has become shorter since l970. When rain falls on snow, it increases the density of the snow and reduces its insulative capacity. Therefore, even though winters are expected to become warmer overall from future climate change, the subnivium will tend to become colder and more variable with less protection from the above-ground temperatures.The effects of a colder subnivium are complex... For example, shrubs such as crowberry and alpine azalea that grow along the forest floor tend to block the wind and so retain higher depths of snow around them. This captured snow helps to keep soils insulated and in turn increases plant decomposition and nutrient release. In field experiments, researchers removed a portion. of the snow cover to investigate the importance of the subnivium's insulation. They found that soil frost in the snow-free area resulted in damage to plant roots and sometimes even the death of the plant.The purpose of this passage is to
....

MCQ-> Study the following information carefully• and answer the questions given below : Seven friends, namely, M, N, 0, P, Q, R and S, have one essay competition each on seven different days of the same week from Monday to Sunday, but not necessarily in the same order. Each one of them studies in different classes, viz, First, Second, Third, Fourth. Fifth. Sixth and Seventh, but not necessarily in the same order. The one who studies in the First Standard has an essay competition on Saturday. S studies in the Second Standard and has an esay competion on Wednesday. N has the essay competition immediately before Q. N does not have the essay competition on any day after that of S. The one who studies in the Seventh Standard does not have an essay competition on any of the days on or before Friday. The one who studies in the Third Standard has the essay competition immediately after 0. Q does not study in the Fifth Standard. The one who studies in the Sixth standard does not have the essay competition immediately before or after S. R does not have the essay competition on Sunday and does not study in the Third Standard. P does not have the essay competition on any of the days before that of M.In which of the following standards does R study ?
....

MCQ->Depth of penetration does not depend on frequency.....

MCQ-> Read the following passage and solve the questions based on it.In an. Engineering College, five students from five different cities were elected as Secretaries by the students to perform different student activities. Each student studies in a different branch of engineering. Additionally, the following information is provided:(i) Abhishek does not stay in the Aravalli hostel where the student from Nagpur stays. (ii) The student, whose name is not Abhishek and does not study in Metallurgy, stays in Satpura hostel. He is the only student among the five to stay at Satpura hostel (iii) Hardeep neither belongs to Jodhpur, nor does he study Mechanical Engineering. (iv) The student-in-charge of Cultural activity stays in the Aravalli hostel where Civil Engineering student does not stay. (v) Sanjoy and thistudent, who studies Metallurgy, both stay in the same hostel. (vi) The student who belongs to Allahabad does not stay with the student-in-charge of the Sports activity staying at Aravalli hostel. (vii) Sanjoy is not the student-in-charge of the Cultural activity. (viii) Ravi, the student-in-charge of Mess activity, stays at Satpura hostel. (ix) The student from Patna and the student, who studies Mechanical Engineering, both stay at Aravalli hostel. They are the only two among the five students to stay at this hostel. (x) The student, who stays at Satpura hostel, studies Computer Science. (xi) Hemant, who does not belong to Kochi, studies Chemical Engineering. He is not the General Secretary of the Student Body. (xii) Sanjoy does not belong to Allahabad. (xiii) The student from Kochi and the student-in-charge of Placement activity, both stay at the Vindhya hostel.Which of the following statement(s) is (are) incorrect? I. The Chemical Engineering student and the student-in-charge of Cultural activity, both stay in the same hostel. II. The student in-charge of Placement activity is studying Metallurgy. III. The student who belongs to Nagpur is the student-in-charge of Sports activity. IV. Ravi belongs to Jodhpur.....