Every time when the dosage of drug has to be increased to achieve the same kick, that initially occurred in response to a smaller dose, the condition is known as

Every time, when dosage of a drug has to be increased to achieve the same "kick" that initially occurred in respectivley to smaller dose, this condition is known as

A stone ,thrown with the same initial speed ,rises 20 m higher when the angle of projection changes from 30^@ to 60^@ . What was the initial speed and the increases in time spent by the stone in air in the second case ?

In the following questions, each question contains Statement I(assertion) and StatementII(reason). Each questions has four choices a, b, c, and d out of which only one is correct. Statement I: A block of mass m starts moving on a rough horizontal surface with a velocity v. It stops due to friction between the block and the surface after moving through a certain distance. The surface is now titled to an angle of 30^@ with the horizontal and the same block is made to go up on the surface with the same initial velocity v. The decrease in mechanical energy in the second situation is smaller than that in the first situation. Statement II: The coefficient of friction between the block and the surface decreases with the increase in the angel of inclination.

Radiation from hydrogen gas excited to first excited state is used for illuminating certain photoelectric plate . When the radiation from same unknown hydrogen-like gas excited to the same level is used to expose the same plate , it is found that the de Broglie wavelength of the fastest photoelectron has decreased 2.3 time gt It is given that the energy corresponding to the longest wavelength of the Lyman series of the known gas is 3 times the ionization energy of the hydrogen gas (13.6 eV) . Find the work function of photoelectric plate in eV . [Take (2.3)^(2) = 5.25]

Radiation from hydrogen gas excited to first excited state is used for illuminating certain photoelectric plate . When the radiation from same unknown hydrogen-like gas excited to the same level is used to expose the same plate , it is found that the de Broglie wavelength of the fastest photoelectron has decreased 2.3 time gt It is given that the energy corresponding to the longest wavelength of the Lyman series of the known gas is 3 times the ionization energy of the hydrogen gas (13.6 eV) . Find the work function of photoelectric plate in eV . [Take (2.3)^(2) = 5.25]

A photoelectric plate is initially exposed to a spectrum of hydrogen gas excited to second energy level. Late when the same photoelectric plate is exposed to a spectrum of some unknown hydrogen like gas, excited to second energy level. It is found that the de-Broglie wavelength of the photoelectrons now ejected has increased sqrt(6.1) times. For this new gas difference of energies of first Lyman line and Balmer series limit is found to be two times the ionization energy of the hydrogen atom is ground state. Detect the atom and determine the work function of the photoelectric plate.

A hydraulic press can lift 100 kg when a mass 'm' is placed on the smaller piston. It can lift _____kg when the diameter of the larger piston is increased by 4 times and that of the smaller piston is decreased by 4 times keeping the same mass 'm' on the smaller piston.

Two pendulums start oscillating in the same direction at the same time. Their time periods are 2 s and 1.5 s respectively , then the phase difference between them when the smaller pendulum has completed one vibration , will be