The yield of wheat and rice per acre for 6 districts of a state is as under :
Calculate range.

The energy of an electron in an excited state of hydrogen atom is -1.51 eV . Calculate the angular momentum of the electron in this state. h = 6.63 xx 10^-34 Js

A wholesale merchant wants to start the business of cereal with Rs 24000. Wheat is Rs 400 per quintal and rice is Rs 600 per quintal . He has capacity to stroe 200 quintal of cereal . He earns profit of Rs 25 per quintal on wheat and Rs 40 per quintal on rice . If he stroes x quintal rice and y quintal wheat, then for maximum profit the objective function is

Energy of an electron in ground state of hydrogen atom is -13.6eV . Calculate its K.E. and P.E. in the same state.

Energy of the electron in the ground state of hydrogen atom is (-13.6eV) . Calculate the energy in 3^(rd) and 4^(th) orbit.

Name the type of waves which are used for line of sight (LOS) communication. What is the range of their frequencies? A transmitting antenna at the top of a tower has a height of 20m and the height of the receiving antenna is 45m. Calculate the maximum distance between them for satisfactory communication in LOS mode. (Radius of the Earth = 6.4 xx 10^(6) m)

The longest wavelength doublet absorption transition is observed at 589 and 589.6nm. Calculate the frequency of each transition and energy difference between two excited states.

The cost of the 4kg of potato,3kg wheat and 2kg rice is Rs.150.The cost of 1kg potato,2kg wheat and 3kg rice is Rs.125.The cost of 6kg potato,2kg wheat and 3kg rice is Rs.175.Find the cost per kg,by using Cramer's Rule

Plant Breeding: Give examples of high yielding varieties of wheat and rice.

A sonometer wire 36 cm long vibrates with a fundamental frequency of 280Hz , when it is under tension of 24.5 N . Calculate mass per unit length of wire.