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Quantum Mechanics

fromplanks law deduce the value of frequency corresponding to peak of (E(not)- V) curve at temp 1000k. In what spectral region does this frequency lie.

Quantum Mechanics

Consider a proton as a bound oscillator with a natural frequency of Calculate the energy of its ground and first excited states.

Quantum Mechanics

A photon and an electron each have an energy of .eV100.63 What are their wavelengths? Which of these would you use to probe atomic structures?

Quantum Mechanics

Two rockets of rest length L approach each other with equal speeds of 0.4c. How long would one rocket appear to the other?

Quantum Mechanics

.A transformer that its number of turns in the primary coils is 200 turns, and 400 tuns in the secondary coil, if the supplied voltage difference is 10V, calculate the secondary voltage difference?

Quantum Mechanics

The frequency of the light emitted by a galaxy receding from the earth is measured
to be 1.5×103 MHz. Assuming that the wavelength of the light source is 22.5 cm,
calculate how fast the galaxy is receding from the earth?

Quantum Mechanics

A photon and an electron each have an energy of
6×10^3.
What are their
wavelengths? Which of these would you use to probe atomic structures?

Quantum Mechanics

Inside a spacecraft travelling at a speed of 0.8c with respect to the earth, the time
interval between two events on the earth is measured to be 30 hrs. What would the
time interval be if the spacecraft was travelling at a speed of 0.9c.

Quantum Mechanics

A rocket is launched from a spaceship travelling with a speed of 0.8c towards the
earth. If the speed of the rocket is 0.6c, what would be its speed as observed by an
observer on earth if the rocket is moving
(i) towards the earth (ii) away from the earth?

Quantum Mechanics

A beam of a electron I'm pinches on every step barrier of hight 0.035ev. Calculate the refraction of electron reflected and transmitted at the barrier which the energy of the electron (I) 0.045ev (ii) 0.02ev