Related Questions

Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.
A Grey
B Black
C Opaque
D White
__________ are not emitted by radioactive substances.
A α-rays
B β-rays
C Protons
D Positrons
The radiation emitted by a black body is known as
A Black radiation
B Full radiation
C Total radiation
D All of these
Wavelength of radiation emitted by a body depends on the __________ of its surface.
A Temperature
B Area
C Nature
D All of the above
Those substances which have so far not been resolved by any means into other substances of simpler form are called
A Atoms
B Compounds
C Elements
D Molecules
Read the paragraph and answer the question-photosynthesis is a process in which radiant energy from sun is stored as chemical energy , which in turn is used to decompose carbon dioxide and water. The product of their decomposition are recombined into a new compound which successively builds, up into more and more complex organic substances like sugars, starches and cellulose that comprise the plant.The word stored in the paragraph is closest in morning to
A specified
B retained
C converted
D discovered
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
A Global warming
B Green house
C Atmospheric effect
D Ionosphere
The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,
A Reduces the contrast of the image and also its sharpness
B Increases the contrast of the image but reduces the sharpness
C Increases both the contrast and sharpness
D Reduces the contrast but increases the sharpness
The incoming short-wave solar radiation is balanced by an equal amount of long-wave radiation from earth going back to space. This is known as ________
A Earth radiation
B Wave balance of earth
C Heat balance of earth
D Radiation exchange
A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct?
A The wavelength of X-ray photon is less than the wavelength of visible radiation photon.
B Both\ \ the\ \ photons\ \ have\ \ different energies.
C The\ speeds\ of\ both\ the\ photons\ in vacuum are different
D The\ \frequency\ \of\ \X-ray\ \photon\ \is higher\ than\ the\ frequency\ of\ visible radiation photon.

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