Basic Science : De Broglie Waves QUESTIONS AND ANSWERS :: part1 : 1 to 5
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
1.The de Broglie wavelength of an electron of kinetic energy 500 e V is |
| 54.92 Å |
| 0.5492 Å |
| 5492 Å |
| 5.492 Å |
2.A magnetic lens can focus |
| sound waves |
| - rays |
| a beam of light |
| a beam of electrons |
3.The de Broglie wavelength λ of an electron of mass ‘m’ and charge ‘e’ accelerated from rest by the application of a potential ‘V’ is given by |
4.In an electron microscope, electrons are focused by means of |
| convex lens |
| concave mirror |
| liquid lens |
| magnetic lens |
5.The de Broglie wavelength λ of a particle of mass ‘m’ moving with a velocity ‘v’ is |
More De Broglie Waves QUESTIONS AND ANSWERS available in next pages
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