4. Using Planck formula, find the energy density u; at wavelength = 1 nm at temperature T=500 K, where k =1.38x1023
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- 6. What is the temperature of an object if the peak wavelength of its blackbody spectrum is 1200 micrometers? a. 2.4 K b. 25 K С. 322 К d. 833 K e. None of these CS Scanned with CamScanner2. A photon is emitted from a hydrogen atom that undergoes an electronic transition from the state n=3 to the state n =2. Calculate (a) the energy, (b) the wavelength, and (c) the frequency of the emitted photon.True or false? 1. Collisions in denser phases lead to shorter lifetimes and broader peaks. 2. The Doppler effect can be minimized by increasing the temperature. 3. Resolving power increases with increasing D1.
- 14. The electrons in a rigid box emit photons of wavelength 1385.0nm during the 3 to 2 transition. How long is the box in which the electrons are confined?1. What is the wavelength associated with a 250g cricket ball moving at 100 km/h?6.An atomic hydrogen atom is immersed in a magnetic field of 12.44 T. For the 2p to 1s transition more than one line will appear due to the Zeeman effect. What is the smallest wavelength separation of these lines? (in units of picometers (pm)).