MCQ
_________ Charge is produced by friction.
- AStationary
- BNo
- CAttractive
- DAll
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The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm. The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be
|
(a) 12.4 eV |
(b) 6.2 eV |
(c) 100 eV |
(d) 200 eV |


The two waves represented by y1 = a sin(wt) and have a phase difference of
|
(a) 0 |
(b) |
(c) |
(d) |
A proton and an a-particle are accelerated through a potential difference of 100 V. The ratio of the wavelength associated with the proton to that associated with an a-particle is
|
(a) |
(b) 2 : 1 |
(c) 2 |
(d) |