Calculate the energy in 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 |
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The value of Planck's constant is 6.63 × 10–34Js. The velocity of light is 3.0 × 108 ms–1. The closest value to the wavelength in nanometers of a quantum of light with a frequency of 8×1015 s-1is-

1. 2×10-25

2. 5×10-18

3. 4×101

4. 3×107

Subtopic:  Planck's Theory |
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If the energy value is E = 3.03 × 10–19 Joules, (h=6.6×10–34 J x sec., C=3×108 m/sec), then the value of the corresponding wavelength is:

1. 65.3 nm

2. 6.53 nm

3. 3.4 nm

4. 653 nm

Subtopic:  Planck's Theory |
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