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A stone is dropped into a well in which the level of water is h below the top of the well. If v is velocity of sound, the time T after which the splash is heard is given by A stone is dropped into a well in which the level of water is h below [...]

In a nuclear reactor (1) the chain reaction is kept under control by rods of cadmium, which reduces the rate (2) the thick concrete shield is used to slow down the speed of fast neutrons In a nuclear reactor (1) the chain reaction is kept under control by rods of cadmium which reduces the rate [...]

A bar of mass M is suspended by two wires. Assume that a uniform magnetic field B is directed into the page. when the current through the bar is I, then the tension in each supporting wire is A bar of mass M is suspended by two wires. Assume that a uniform magnetic field B [...]

It is observed that only 0.39% of the original radioactive sample remains undecayed after eight hours. Hence, It is observed that only 0.39% of the original radioactive sample remains undecayed after eight hours. Hence October 18, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Choose the correct statements from the following: (1) Like other light nuclei, the 2He4 nuclei also have a low value of the binding energy per nucleon. (2) The binding energy per nucleon decreases Choose the correct statements from the following: (1) Like other light nuclei the 2He4 nuclei also have a low value of the [...]

A ball is dropped from the top of a building. The ball takes 0.5s to fall past the 3m height of a window some distance from the top of the building. If the speed of the ball at the top and at the bottom of the window are VT and VB respectively, then (g = [...]

Figure shows a short magnet executing small oscillations in an oscillation magnetometer in earth’s magnetic field having horizontal component 24μT. The time period of oscillation is 0.10s. An upward electric current of 18A is established in the vertical wire placed 20cm east of the magnet by closing the switch S. Find the new time Two [...]

A body starts from rest and is uniformly accelerated for 30 s. The distance travelled in the first 10 s is x1, next 10 s is x2 and the last 10 s is x3. Then, x1:x2:x3 is A body starts from rest and is uniformly accelerated for 30 s. The distance travelled in the first [...]

The phenomenon of nuclear fission can be carried out both in a controlled and in an uncontrolled way. Out of the following, the correct statements vis-a-vis these phenomena are: the correct statements vis-a-vis these phenomena are: The phenomenon of nuclear fission can be carried out both in a controlled and in an uncontrolled way. Out [...]

Calculate the magnetic induction at P, for the arrangement shown in figure, when two similar short magnets of magnetic moment M are joined at the middle. So that they are mutually perpendicular – Calculate the magnetic induction at P For the arrangement shown in figure when two similar short magnets of magnetic moment M are [...]