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Sodium and copper have work function 2.3 eV and 4.5 eV respectively. The ratio of their threshold wavelengths is nearest to
Options
(a) 1 : 2
(b) 4 : 1
(c) 2 : 1
(d) 1 : 4
Correct Answer:
2 : 1
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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- For photoelectric emission to take place
- A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹
- A rocket with a lift-off mass 3.5 x 10⁴ kg is blasted upwards with an initial acceleration
- The period of oscillation of a mass M suspended from a spring of negligible mass is T
- ₆C¹⁴ absorbs an energitic neutron and emits beta particles. The resulting nucleus is
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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