Question

How does the color and intensity of the emitted light change as you take a solid object and heat it up from a low temperature to an extremely high temperature?

a. It gets redder and dimmer.

b. It gets redder and brighter.

c. it gets bluer and dimmer.

d. It gets bluer and brighter.

e, As it gets hotter, it emits only specific frequencies of light corresponding to the atomic transitions of the material at the surface.

f. As it gets hotter, it emits light more energy in the red parts of the spectrum, and less and less in the blue part of the spectrum.

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Which of the following waves can best bend around objects and pass through clouds?

a. infrared

b. ultraviolet

c. visible

d. radio

e. x-ray

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Which of the following would be the best location for an ultraviolet telescope?

a. At sea level

b. high on a mountain

c. In orbit, above the Earth's atmosphere

d. None of the above, there is no such thing as an ultraviolet telescope.

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In the Bohr model of the atom, if a photon has a little more than the energy between the ground state and the next level, what can happen when it strikes the atom?

a. It will be absorbed.

b. it will be absorbed, and another photon will be emitted with the extra energy.

c. it will not be absorbed.

d. None of the above are correct

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Which of the following cannot be detected by using the Doppler effect?

a. the rotation of the sun

b. the rotation of the planets.

c. the motion of binary star systems

d. the radial motion of a star moving toward the Earth

e. all of the above can be detected in this manner, so none is the answer.

Answer 1

Q.1. When a solid object is heat it up from a low temperature to an extremely high temperature, it gets redder and brighter.

Q.2. Radio waves can best bend around objects and pass through clouds.

Q.3. An ultraviolet telescope should be placed in orbit, above the Earth's atmosphere.

Q.4. If a photon has a little more than the energy between the ground state and the next level, it will not be absorbed.

Q.5. All of the mentioned phenomena can be detected using the Doppler effect.