- 1(current)
Q. No.The value of Planck's constant is 6.63 × 10–34 Js. The speed of light is 3 × 1017 nm s–1. Which value is closest to the wavelength in nanometers of a quantum of light with a frequency of 6 × 1015 s–1?
1. 25
2. 50
3. 75
4. 10
1. 25
2. 50
3. 75
4. 10
Subtopic: Electromagnetic Radiation |
86%
Level 1: 80%+
AIPMT - 2013
Hints
According to the law of photochemical equivalence, the energy absorbed (in ergs/mole) is given as:
(h = 6.62 × 10–27 ergs, c = 3 × 1010 cm s–1, NA = 6.02 × 1023 mol–1)
(h = 6.62 × 10–27 ergs, c = 3 × 1010 cm s–1, NA = 6.02 × 1023 mol–1)
| 1. | \({{1.196\times 10^{8}}\over{\lambda}}\) | 2. | \({{2.859\times 10^{5}}\over{\lambda}}\) |
| 3. | \({{2.859\times 10^{16}}\over{\lambda}}\) | 4. | \({{1.196\times 10^{16}}\over{\lambda}}\) |
Subtopic: Electromagnetic Radiation |
64%
Level 2: 60%+
NEET - 2013
Hints
- 1(current)
Q. No.
© 2026 GoodEd Technologies Pvt. Ltd.