Related Questions

According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a
The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as
The question below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in which of the statements are sufficient to answer the question. Choose your answer from the options based on this. What is the code of “Actor”?
I. In a certain language, “road trip wine” is written as “bk mk tk” and “wine actor photo” is written as “gk rk bk”.
II. In a certain language, “photo wine cycle” is written as “bk ak rk” and “cycle actor photo” is written as “gk ak rk”.
Given below is the diagram of evacuated glass tube of photo emissive tube. Identify the part which is indicated with a question mark.
In photo emissive transducers, electrons are attracted by ___________
A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in
Which is the function of cell wall?
1. Provides shape to the cell.
2. Protects the cell from mechanical damage and infection.
3. Helps in cell to cell interaction.
4. Provides barrier to undesirable macromolecules.
5. Imbibes water.
A circular frame with a width of 2 inches surrounds a circular photo with a diameter of 8/ inches Assuring that the area of the frame does not overlap the area of the photo what is the area of the frame?
একটি ধাতব তলে λ তরঙ্গদৈর্ঘ্যের একবর্ণী আলোকরশ্মি আপতিত হলে ফটো-ইলেক্ট্রন নির্গত হয় এবং এক্ষেত্রে বিভবের মান 3Vo একই তলে যখন 2λতরঙ্গদৈর্ঘ্যের একবর্ণী আলো আপতিত হয়, তখন নিবৃত্তি বিভবের মান Vol ফটো-ইলেক্ট্রন নির্গত হওয়ার জন্য ঐ তলটির সূচন তরঙ্গদৈর্ঘ্যের মান নির্ণয় কর।(A monochromatic light of wavelength λ is incident on a metallic surface then ejects photo-electron and the value of stopping potential is 3Vo. When the same surface is illuminated by a light of wavelength 2λ., the stopping potential becomes Vo. Calculate the threshold wavelength for this surface to eject photo electrons.)
Positive photo resists are used more than negative photo resists because ___________