Ravi works as a cashier in a bank. He has currency of denominations ₹100, ₹50, ₹10 respectively. The ratio of number of these notes is 2:3:5. The total cash with, Ravi is ₹4,00,000. How many notes of cash of each denomination does he have?

A man has Rs.480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has ?

Two containers A and B have the same volume. Container 'A' contains 5 mole oxygen gas. Container 'B' contains 3 moles He gas and 2 mole CH_4 gas. Both the containers are separately kept in vaccum at the same temperature. Both the containers have very small orifices of the same area through which the gases leak out. The rate of diffusion of O_2 is how many times the rate of diffusion of He and CH_4 mixture

A purse contains Rs. 100 in the denomination of Rs. 10 and Rs. 50 notes. Number of Rs. 10 notes are 4 more than that of Rs. 50 notes. Then the number of Rs. 10, Rs. 50 notes are respectively

Rubina went to a bank to withdraw Rs. 2000. She asked the cashier to give the cash in Rs. 50 and Rs. 100 notes only. She got 25 notes in all. Can you tell how many notes each of Rs. 50 and Rs. 100 she received?

Two moving coil galvanometer, X and Y have coils with resistance 10 Omega and 14 Omega cross-sertional areas 4.8xx10^(-3)m^(2) and 2.4xx10^(-3)m^(2) , number of turns 30 and 45 respectively. They are placed in magnetic field of 0.25 T and 0.50 T respectively. Then, the ratio of their voltage sensitivities and the ratiof of their voltage senstivities are respectively

A question paper consists of two sections having respectively 3 and 4 questions the following note is given on the paper " it is not necessary to attempt all the questions . One question from each section is compulsory " . In how many ways can a candidate select the questions ?

It is tempting to think that all possible transitions are permissible, and that an atomic spectrum arises from the transition of the electron from any initial orbital to any other orbital. However, this is not so, because a photon has an intrinsic spin angular momentum of sqrt2 (h)/(2pi) corresponding to S = 1 although it has no charge and no rest mass. On the other hand, an electron has got two types of angular momentum : Orbital angular momentum, L=sqrt(l(l+1))h/(2pi) and spin angular momentum, arising from orbital motion and spin motion of electron respectively. The change in angular momentum of the electron during any electronic transition must compensate for the angular momentum carries away by the photon. to satisfy this condition the difference between the azimuthal quantum numbers of the orbital within which transition takes place must differ by one. Thus, an electron in a d-orbital (1 = 2) cannot make a transition into an s = orbital (I = 0) because the photon cannot carry away enough angular momentum. An electron as is well known, possess four quantum numbers n, I, m and s. Out of these four I determines the magnitude of orbital angular momentum (mentioned above) while (2n m determines its z-components as m((h)/(2pi)) he permissible values of only integers right from -1 to + l. While those for I are also integers starting from 0 to (n − 1). The values of I denotes the sub shell. For I = 0, 1, 2, 3, 4,..... the sub-shells are denoted by the symbols s, p, d, f, g, .... respectively The maximum orbital angular momentum of an electron with n= 5 is