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Which of the following statement is true for optical flats? Statement 1: Type-A optical flats are tested for parallelism of working surfaces. Statement 2: Flatness of working surface is tested by comparing with a master flat.

Which of the following statement is true for optical flats? Statement 1: Type-A optical flats are tested for parallelism of working surfaces. Statement 2: Flatness of working surface is tested by comparing with a master flat. Correct Answer F, T

Type-A optical flats are used are used to test flatness of working faces and Type-B flats are used to test parallelism of working faces, flatness of working faces and also thickness.

Related Questions

Six flats A, B, C, D, E and F are located in two rows of three flats each. The flats in both the rows face each other. Flat D is diagonally opposite to flat C. Flat E is opposite to flat F, which is north facing. Flat C is 2nd to the left of A and both of flats are south facing. Which of the following flats is facing flat B?
Use the following passage for the questions based on it. There are 6 flats on a floor in two rows. Out of these, three are north facing and the other three are south facing flats. The flats are to be allotted amongst Arun, Biswajyot, Chitra, Derek, Evan, and Fatima. Biswajyot gets a north facing flat and is not next to Derek. Derek and Fatima get diagonally opposite flats. Chitra is next to Fatima, and gets a south facing flat.Evan gets a north facing flat. Which of the following combination gets south facing flats?
In the question below, a passage is given followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the following suggested courses of actions logically follow(s) for pursuing. Passage: After a certain group of civil activists have filed a complaint against two mammoth flats in Kochi which were illegally built near to a river, breaching all kinds of environmental guidelines, the Supreme Court has ordered that the flats be demolished. Flat owners have since gone on a protest demanding that their homes should not be destroyed. Courses of action: I. The Government should not demolish the flats. II. The Government should demolish the flats and pay compensation equivalent to the market value of the flats to flat owners. III. Action should be taken against the builders and the government officials who gave the permit for construction.
Use the following passage for the questions based on it. There are 6 flats on a floor in two rows. Out of these, three are north facing and the other three are south facing flats. The flats are to be allotted amongst Arun, Biswajyot, Chitra, Derek, Evan, and Fatima. Biswajyot gets a north facing flat and is not next to Derek. Derek and Fatima get diagonally opposite flats. Chitra is next to Fatima, and gets a south facing flat.Evan gets a north facing flat. Which of the following pairs is exactly opposite to each other?
Use the following passage for the questions based on it. There are 6 flats on a floor in two rows. Out of these, three are north facing and the other three are south facing flats. The flats are to be allotted amongst Arun, Biswajyot, Chitra, Derek, Evan, and Fatima. Biswajyot gets a north facing flat and is not next to Derek. Derek and Fatima get diagonally opposite flats. Chitra is next to Fatima, and gets a south facing flat.Evan gets a north facing flat. Except Derek and Fatima, which other pair is diagonally opposite to each other?
Which of the following option is correct for given statements about parallelism? Statement 1: A dial indicator is used to test parallelism of two planes. Statement 2: Parallelism defines the distance between two surfaces that are parallel to each other and the datum surface.
For providing a rented flat, a broker takes a brokerage that is directly proportional to the monthly rent of the flat. He showed two flats to a family, such that the monthly rent of the first flat was Rs. 15849. If the ratio of the brokerage of the two flats is 9 ∶ 4, what is the difference between the monthly rents of the two flats?
For providing a rented flat, a broker takes a brokerage that is directly proportional to the monthly rent of the flat. He showed two flats to a family, such that the monthly rent of the first flat was Rs. 35000. If the ratio of the brokerage of the two flats is 7 ∶ 4, what is the difference between the monthly rents of the two flats?
Which of the following options is true for given statements for flatness testing? Statement-1 : Straight edges can be used to check flatness. Statement-2 : Single-ended straight edge can be used to determine the flatness of the surface.
Which of the following option is true for given statements for flatness testing? Statement 1: Straight edges can be used to check flatness. Statement 2: Single ended straight edge can be used to determine flatness of the surface.