Friction Question Answer Discussion

Answer the question briefly and the point: What is the angle of friction between two surfaces in contact having coefficient of friction (1)/(sqrt3) ?

In a test paper there are 10 questions . Number of ways in which 6 questions to be answered is

In a multiple choice question, there are four alternative answers of which one or more than one is correct A candidate will get marks on the question only if he ticks the correct answer. The candidate decides to tick answers at a random. If he is allowed up to three chances to answer the question, then find the probability that he will get marks on it.

In a multiple choice question, there are four alternative answers of which one or more than one is correct A candidate will get marks on the question only if he ticks the correct answer. The candidate decides to tick answers at a random. If he is allowed up to three chances to answer the question, then find the probability that he will get marks on it.

There are 180 multiple choice questions in a test. If a candidate gets 4 marks for every correct answer and for every unattempted or wrongly answered question one mark is deducted from the total score of correct answers. If a candidate scored 450 marks in the test, how many questions did he answer correctly?

There are 180 multiple choice questions in a test . If a candidate gets 4 marks for every correct answer and for every unattempt or wrongly answered questions 1 mark is deducted from the total score of correct answers. If a candidate scored 450 marks in test how many questions did he answer correctly

Find the total number of ways of answering 5 objective type questions, each question having 4 choices.

Find the total number of ways of answering five objective type questions, each question having four choices

Answer the question briefly and the point: Friction is a non-conservative force. Why?