Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

All the forms of matter except gases emit electromagnetic radiation continuously. The gases which electrically or thermally excited emit a certain wavelength only, then which of the following is/are true about the process (i) The spacing between the atoms in the other forms of matter is high than in gas (ii) The spacing between the atoms in gases is high than the other forms of matter (iii) The energy of the emitted radiation depends on the spacing between the atoms (iv) The wavelength of the emitted radiation depends on the spacing between the atoms 
Which polarizability is the ionic polarizability?
If the static dielectric constant of NaCl crystal is 5.6 and its optical refractive index is 1.5, the ratio of its electric polarizability to its total polarizability is
Calculate the electronic polarizability of an argon atom whose ɛr = 1.0024 at NTP and N = 2.7×1025 atoms/m3.
A collection of N atoms is exposed to a strong resonant electromagnetic radiation with Ng atoms in the ground state and N atoms in the excited state, such that Ng + Ne = N. This collection of two-level atoms will have the following population distribution
A vibrational-electronic spectrum of homonuclear binary molecules, involving electronic ground state ε'' and excited ε', exhibits a continuum at $$\overline v $$ cm-1. If the total energy of the dissociated atoms in the excited state exceeds the total energy of the dissociated atoms in the ground state by Eex cm-1, then dissociation energy of the molecule in the ground state is
Five bottles named P, Q, R, S, T, of different sizes are kept in a row. Bottle S is larger than two bottles as well as smaller than two bottles. Bottle R is larger than only one bottle. Bottle Q is smaller than P but larger than S. How many bottles are larger than Bottle T?
Consider the following statements regarding electronic voltmeter. 1) The detection of low-level signals is not possible using the electronic voltmeter 2) MOSFET is used at the input of the electronic voltmeter 3) Vacuum tube voltmeters (VTVM) consumes more power as compared to any non-electronic voltmeter. Which of the following is / are incorrect?
Recently, there has been a concern over the short supply of a group of elements called 'rare earth metals.' Why? 1. China, which is the largest producer of these elements, has imposed some restrictions on their export. 2. Other than China, Australia, Canada and Chile, these elements are not found in any country. 3. Rare earth metals are essential for the manufacture of various kinds of electronic items and there is a growing demand for these elements. Which of the statements given above is/are correct?
Various gases present in air are oxygen, nitrogen, argon and neon. The boiling points of these gases are –183, –196, –186 and –246 degrees Celsius, respectively. These gases are separated from each other by the process of fractional distillation. Which of the following statements about the order in which these gases get separated is correct?