Physics question and answers for August 21, 2024
- Q Secondary output of a transformer is 12 V for 220 V primary input Which of the followin statements is true for this transformer a It is a step up transformer...
- Q A bead moves along a straight horizontal wire of length L starting from the left end with velocity vo retardation is proportional to the distance that remains to the right...
- Q The plates of a parallel plate capacitor are separated by d cm A plate of thickness t cm with dielectric constant k is inserted and the remaining space is filled...
- Q The mean weight of 150 students in a certain class is 60 kilograms The mean weight of boys in the class is 70 kilogram and that of the girls is...
- Q lucting shells A and B of radil r and 2r respectively They are given charge Q and 2Q respectively as shown A 3 Q 2Q After the switch is closed...
- Q 162 If wind is blowing from source side to observer side what will be effect occur on the difference between apparant freq to original freq during relative motion between source...
- Q Two bodies M and M are connected by a light string passing over a light smooth pulley at the end of an incline The mass M lies on incline and...
- Q A thin walled glass tube of radius 0 5 cm is dipped vertically in the water of surface tension 70 dyne cm The force required to take it out from...
- Q Q 8 a c A stone thrown from the top of a building is given an initial velocity of 20 0 m s straight upward Determine the time in seconds...
- Q 4 The following figure shows the electric lines of force emerging from a charged body If the electric field at A and B are EA and EB respectively and if...
- Q attempted questions will be con ned for marking A current carrying wire AB of length 2nR is turned along a circular arc as shown Then magnetic field at O A...
- Q why is the Reynolds number taken as 2000 while as per ERT the laminar or steady flow is less than 1000 plit increases Discuss qualitatively 10 26 a What is...
- Q 16 An alternating emf of frequency v 2 LC is applied to a series L C R circuit For the frequency of the applied emf 1 the circuit is at...
- Q current phasor I is V 1 2 V sin oot L i sin oot m V sin oot m i sin wt 2 m wt TC 2 Soot behind the...
- Q 36 A mercury drop of radius 1 0 cm is sprayed inte 10 droplets of equal sizes The energy expender in this process is surface tension of mercury is equal...
- Q The period of revolution of planet A around the sun 8 times that of B The distance of A from the sun i how many times greater than that of...
- Q Magnetic field intensity is defined as Magnetic moment per unit volume 2 Magnetic induction force acting on a unit magnetic pole Number of lines of force crossing per unit area...
- Q Two metal plates form a parallel plate capacitor of capacitance C The distance between the plates is d A metal sheet of thickness d 2 and of the same area...
- Q 8 Radii of conductors 1 2 as shown below are r 2r If the resistivity of their materials are same and equal to p then current drawn from the battery...
- Q tric experiment is performed at two different light intensities I and 1 1 Choose the correct graph showing the variation of stopping potential versus frequency of light 1 12 1...
- Q 3 12 cm s 4 8 cm s When a wave travels in a medium the particle 42 displacement is given by y asin 2x bt cx where a b...
- Q Given a current carrying wire of non uniform cross section Which of the following is constant through out the wire a O Current and drift speed b O C Drift...
- Q A smooth narrow tunnel is dug along the chord of earth The time period of vibration of a small ball dropped from one end of the tunnel is AVE f...
- Q A ball of mass 1 kg collides perpendicularly on a smooth stationary wedge of mass 2 kg kept on a smooth horizontal surface The coefficient restitution is e 1 2...
- Q Due to capillary action water rises to a height of 1 16 3 cm in a capillary of length 18 cm above the water level If the tube is cut...
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