- 1(current)
Q. No.Calculate the energy corresponding to light of wavelength 45 nm:
(Planck's constant h = 6.63 × 10–34 Js & speed of light c = 3 × 108 ms–1)
1. 6.67 x 1015 J
2. 6.67 x 1011 J
3. 4.42 x 10-15 J
4. 4.42 x 10-18 J
Subtopic: Planck's Theory |
81%
Level 1: 80%+
AIPMT - 2014
Hints
Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
| Statement I: | The Balmer spectral line for H atom with lowest energy appears at \(\dfrac 5{36}\mathrm{ R_H~ cm^{-1}}\) (\(\mathrm{R_H}\) = Rydberg constant) |
| Statement II: | When the temperature of a black body increases, the maxima of the curve (intensity versus wavelength) shifts towards shorter wavelength. |
| 1. | Statement I is correct and Statement II is incorrect. |
| 2. | Statement I is incorrect and Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect. |
Subtopic: Bohr's Theory | Planck's Theory |
67%
Level 2: 60%+
NEET - 2024
Hints
- 1(current)
Q. No.
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