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Subject: Physics, asked 3 hours, 45 minutes ago

Power of a source of 2mW and wavelength 400nm light is directed on a photoelectric cell.If the current in the cell is 0.40 microampere,then the percentage of the incident photons that produce photoelectrons is 

Please solve this question and explain it.

Subject: Physics, asked 9 hours, 35 minutes ago

Please explain this question........

Subject: Physics, asked 13 hours, 55 minutes ago

two plane mirrors

Subject: Physics, asked 13 hours, 56 minutes ago

a plano convex

Subject: Physics, asked 13 hours, 57 minutes ago

the speed of

Subject: Physics, asked 1 day, 11 hours ago

Please explain this point

Subject: Physics, asked 2 days ago

What is the proper explanation of this question

Subject: Physics, asked 2 days, 2 hours ago

what is gravity? please explain

Subject: Physics, asked 1 day, 15 hours ago

I want to get the solution for this

Subject: Physics, asked 2 days, 14 hours ago

I need help with this question

Subject: Physics, asked 3 days ago

Answer this ????

Subject: Physics, asked 3 days, 3 hours ago

Monochromatic light of wavelength 5460 A? is incident normally on a slit of width 0.1mm. Find the angular positions of the first and secondary minima formed due to Fraunhoffer diffraction

Subject: Physics, asked 4 days, 7 hours ago

Please explain this...,,

Subject: Physics, asked 4 days, 9 hours ago

Please explain this......????

Subject: Physics, asked 4 days, 10 hours ago

Why doesn't gravitational force have any torque?

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