MATS_15101: Physics

Question 1

True or False:

A photon has no rest mass?

Answer 1

True

Question 2

For a blackbody radiator, the frequency at which maximum radiation of energy occurs is proportional to?

Answer 2

T

Question 3

In Compton Scattering, the change in wavelength is maximum if angle of scattering is?

the change in wavelength is the compton shift

Answer 3

180°

cos(180°) = -1. Δλ_max= 2λ_c

Question 4

True or False:

For the Compton scattering effect, the larger the angle through which the photon is scattered, the more energy it loses.

Answer 4

True

This means the more it was deviated

Question 5

True or False:

For the Compton scattering effect, high energy radiation is scattered more than lower energy radiation

Answer 5

False

Question 6

Compton shift (Δλ) depends on…?

Answer 6

Compton wavelength (λ_c) and scattering angle

Question 7

True or False:

The higher the Compton shift, the more energy has been lost by scattered pfoton

Answer 7

True

Question 8

What is the unit for thermal conductivity?

Answer 8

Watts per meter per Kelvin