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NEET UG PHYSICS MCQ: DUAL NATURE OF RADIATION AND MATTER

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A broken ligament is being ‘welded’ back in place using 20 ms pulses from a 0.5 W laser operating at a wavelength of 632 nm. The number of photons in 5 pulses of laser are

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Correct option: C

1.59 \times {10^{23}}

Option C (

1.59 \times {10^{23}}

) is correct because it is the number of photons calculated from the total energy of the laser pulses.

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If the Broglie wavelengths associated with a proton and an

\alpha

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\alpha

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3 \times {10^{ - 4}}\,T.

If the radius of the largest circular path followed by these electrons is 10.0 mm, the work function of the metal is close to The shortest wavelength of

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