Daily NEET MCQ- July 26, 2022 - NEET MCQ

The stopping potential is directly proportional to the frequency of light. Hence, the stopping potential increases with an increase in the frequency of the incident light.

No effect. This is because the intensity of radiation incident on a photo-sensitive plate is independent on stopping potential. So, the stopping potential remains the same, even if the intensity is doubled.

Isomorphous is when two or more substances have the same crystal structure. Polymorphous is when a single substance can crystallize in two or more forms depending upon the conditions.

Quartz glass does not have a perfectly ordered structure, hence it is classified as an amorphous solid. The rest are crystalline solids due to ordered structures.

Crystalline solids have a perfectly ordered structure which collapses immediately at a specific temperature. Amorphous solids melt over a range of temperatures, not one specific value.

The presence of protease (protein digesting enzymes) and RNase (RNA digesting enzymes) in the presence of the virulent or avirulent strains will not affect the process of transformation. But on the contrary, when the DNase is present, the process of transformation will not occur. This proves that the transformation process cannot occur as long as the DNase enzyme is present. The role of nuclease is to cleave the phosphodiester bonds between the nucleotides of nucleic acids.

The mouse fed with the S-strain from the Staphylococcus pneumoniae, happens to naturally die. This is on an account that the S-strains are virulent. Under such conditions, the mouse will not be able to survive. But, when the heat killed S-strains from Staphylococcus pneumoniae are injected into the mouse, it will live.

Prior to the works done by Oswald Avery, Colin MacLeod and Maclyn McCarty, the genetic material was thought to be as the protein. Nucleoids are the irregular shaped structures in the prokaryotic cell. They contain nearly all of the genetic material of the prokaryotes. Nucleons are present inside the nucleus of an atom, alongside with the protons. Chromosome carries the genetic information of the genes.

Mirage is an optical illusion observed in deserts or over hot extended surfaces like a coal-tarred road, due to which a traveler sees a shimmering pond of water some distance ahead of him and in which the surrounding objects like trees appear inverted.

The faces of a diamond are cut suitably so that light entering it suffers total internal reflections repeatedly and gets collected inside but it comes out through only a few faces. Diamond sparkles when seen in the direction of emerging light.