Two glass blocks of trinagular cross section`(n=1.5)`are used to make a periscope ,Which of the following is the correct arrangement?

Which of the following enzymes is not used n making detergent

Which of the following enzymes is not used n making detergent

Which one among the following is used to make periscope?

Which one among the following is used to make periscope?

Which of the following figures represents the cross section of an OV ?

Which of the following figures represents the cross section of an OV ?

Two pieces of conductor of same material and of equal length are connected in series with a cell. One of the two pieces has cross-sectional area double that of the other. Which one of the following statements is correct in this regard ?

A non-viscous liquid is flowing through a non-uniform pipe from section A to section B as shown in the figure. Cross sectional area of the pipe at A is less than that at B . Which of the following statements are correct?

A non-viscous liquid is flowing through a non-uniform pipe from section A to section B as shown in the figure. Cross sectional area of the pipe at A is less than that at B . Which of the following statements are correct?