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Which of the following components is used to create an N-type semiconductor? a. Trivalent impurity b. Pentavalent impurity c. Intrinsic semiconductor d. Extrinsic semiconductor
Mr.Rohan while helping the students of Class IV in adding and subtracting fractions observed that several students are not able to complete the addition of two improper fractions. He gave a small test with questions from the addition of proper fractions (one item of addition of two similar fractions, three items from the addition of proper and improper fractions, and four items from the addition of improper fractions). He analyzed the responses of each student and found that nearly 45% of students were not clear in adding proper with improper fractions which were affecting their performance in adding two improper fractions. He, therefore, focused on developing the understanding of improper fractions and their addition with proper fractions after which he proceeded to teach the addition of two improper fractions. Which kind of assessment is depicted by this situation?
Each of the questions below consists of a question and three statements number I, II and III given below it. You have to decide whether the data provided in the statement are sufficient to answer the question. Find the percentage of impurity in the mixture. I. A discount vendor professes to sell his at the cost price and mixes with impurity and thereby gain 25%. II. If in 45 kg of mixture, 5/2 times quantity of impurity is equal to 150% of 2/3 of the quantity of whole mixture. III. The ratio of quantity of pure wheat in the mixture to the total quantity of the mixture in 3 : 5. (Mixture is made of pure wheat and impurity)
What type of material is obtained when an intrinsic semiconductor is doped with trivalent impurity?
Addition of pentavalent impurity to a semiconductor creates many
What happens when a trivalent semiconductor is doped with a pure semiconductor?
A small impurity is added to germanium to get a p-type semiconductor. Identify the impurity?
A trivalent impurity has valence electrons
Which of the following is NOT a trivalent impurity?
The impurity level in an extrinsic semiconductor is about of pure semiconductor.