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Almas asked a question
Subject: Physics, asked on on 26/3/17
The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate. Light source is put on and a saturation photo current is recorded. An electric field is switched on which has a vertically downward direction :-
(1)    The photo current will increase
(2)    The kinetic energy of the electron will increase
(3)    The stopping potential will decrease
(4)    The threshold wavelength will increase
please explain

 
Madhura Bose asked a question
Subject: Physics, asked on on 16/1/17
stopping potential depends upon what factors??
Almas asked a question
Subject: Physics, asked on on 2/3/17
Two separate monochromatic light beams A and B of same intensity are falling on a unit area of metallic surface. Their wavelength are lambdaA and lambdaB respectively. Assuming that all incident light is used in ejecting photoelectrons, the ratio of number of photoelectrons from beam A to that from B is
a) (lambdaA/lambdaB)2
b) lambdaA/ lambdaB
c) lambdaB/lambdaA
d) 1
Madhura Bose asked a question
Subject: Physics, asked on on 16/1/17
modulating index is kept less than 1, why???plz explain briefly...
Madhura Bose asked a question
Subject: Physics, asked on on 17/1/17
p=r/z?? ....power factor confused plzz explain!!!!
Ajay asked a question
Subject: Physics, asked on on 9/1/17
13.c 14.c 15.d 16.c Pls tell 13,14,15,16 its urgent
Prajnesha Singh asked a question
Subject: Physics, asked on on 10/10/17
What is the potential energy formula for an electron in hydrogen atom and how is it related to Total enrgy and kinetic enrgy? Also explain Why PE fromula of an e has -ve sign? :D mn experts 
Mohammed Adil Ibrahim asked a question
Subject: Physics, asked on on 28/11/16
explain the nature of alpha and gamma particle
Sandali Khare asked a question
Subject: Physics, asked on on 13/2/18
Explain briefly how Einstein's photoelectric equation accounts for all the observations in the photoelectric effect.
Sandali Khare asked a question
Subject: Physics, asked on on 28/2/18
Ramamurti, was willing to shift his residence because government had decided to start a nuclear power plant near his village. His daughter Radha, a science student convinced him not to shift since adequate safety measures to avoid any mishap had already been taken by the government before starting the nuclear thermal plant. (1) What are the values displayed by Radha? (any two) (2) What is the principle of working of nuclear reactor? (3) Lighter elements are better moderators for a nuclear reactor than heaviour element, why?
Subhendu Gorai asked a question
Subject: Physics, asked on on 5/3/17
What will be the size of antenna to transmit 20 gigahertz frequency to the free space.
Almas asked a question
Subject: Physics, asked on on 8/4/17
What % of original radioactive atoms is left after 15 half lives ?
a) 25 / 213 %
b) 12.5 / 211 %
c)  6.25 / 210 %
d) 7.5 / 210 %
 
Yadav Ji asked a question
Subject: Physics, asked on on 1/3/18
sr why does that peak occurs at that binding enrgy graph
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