Physics question and answers for August 27, 2024
- Q Which of the following statement is true about de Broglie wavelength of moving ball in cricket 1 de Broglie s theory does not apply on such a big body 2...
- Q E E 1 R R R 9 3 zero 2 E R www Current through the battery immediately after key K is closed and after a long time interval R...
- Q Ub which of the following systems will be radius of the first orbit n 1 be minimur Doubly ionized lithium 2 Singly ionized helium 4 hydrogen atom 3 Deuterium atom
- Q 1 proton 2 a particle 3 Neutron 4 B particle When ultraviolet rays incident on metal plate then photoelectric effect does not occur it occur by incidence of 4 Light...
- Q If a capacitor of capacitance P 0 05 J 2 1 J 3 0 005 J A capacitor is connected to a cell of emf E having some internal resistance...
- Q In the figure given the potential difference between A and B in steady state will be 1uF 3 F HH 3 F V 2002 ww B 1 F 1 F...
- Q Consider a photon gas enclosed in a volume V and in equilibrium at temperature T The photon is a massless particle so that pc a What is the chemical potential...
- Q 1 1 1 eV 2 2 63 eV 3 Work function a metal is 5 26 x 10 18 then its threshold wavelength will be 1 736 7 2 760...
- Q 1 4 A parallel plate capacitor is charged to 100 volts If a 1 mm thick plate is inserted between the plates of the capacitor distance between the plates required...
- Q J J Thomson s cathode ray tube experiment demonstrated that cathode rays are streams of negatively charged jons 2 all the mass of an atom is essentially in the nucleus...
- Q After charging a capacitor the battery is removed Now by placing a dielectric slab between the plates 4 the potential difference between the plates and the energy stored will decrease...
- Q 3 will remain constant 4 will either increase or decrease A point source causes photoelectric effect from a small metal plate Which of the following curves may represent the saturation...
- Q For the circuit shown in the diagram find the value of V V just after closing the switch S 152 www 252 www 1 4 V 2 8 V 352...
- Q If the shown figure combination of four capacitors and their values are given Charge and potential difference acorss 4 F capacitor will be RPMT 2010 1 600 C 150 Volt...
- Q 1 800 V 8 400 V 3 16 A capacitor of 6uF is charged to such an extent that the potential difference between the plates becomes 50 V The work...
- Q PHYSICS Three capacitors of same capacitance are connected in parallel When they are connected to a cell of 2 volt total charge of 1 8 C is accumulated on them...
- Q 1 10 2 eV An energy of 24 6 eV is required to remove one of the electrons from a neutral helium atom The energy In required to remove both...
- Q The stopping potential necessary to reduce the photoelectric current to zero 1 is directly proportional to wavelength of incident light 2 uniformly increases with the wavelength of incident light 3...
- Q 1 2eV m 2 2eV m the The 21 cm radio wave emitted by hydrogen in interstellar space is due to ter interaction called teh hyperfine interaction natomic hydrogen The...
- Q In the given figure the capacitance of each capacitor is C then the effective capacitance between A and B will be 1 C 2 2 C A B C C...
- Q n resistances each of resistance R are joined with capacitors of capacity C each and a battery of emf E as shown in the figure In steady state condition ratio...
- Q Draw a graph of conductivity vs temperature for a metal a semiconductor and a superconductor O The resistance R experienced by an electrical wire of pure copper can be ad...
- Q 4 remains decreases increases 4 decreases remains unchanged A parallel plate condenser is connected to a battery of c m f 4 volt If a plate of dielectric constant 8...
- Q photoelectrons emitted from a metal surface The 1 Are all at rest 2 Have the same kinetic energy 3 Have the same momentum 4 Have speeds varying from zero up...
- Q A block of mass 1 kg is horizontally thrown with velocity of 10 m s on a stationary long rough plank whose coefficient of kinetic friction is 0 25 After...
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