Related Questions

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
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 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
Which one of the following frequency regions is a part of sun's radiation?
A Ultraviolet frequency region
B Infrared frequency region
C Radio frequency region
D All of these
Which one of the following part of human body withstands minimum radiation?
A Thyroid
B Kidneys
C Eyes
D Ovaries/testis
A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of __________ high above earth's atmosphere, which absorbs it.
A Hydrogen
B Carbon dioxide
C Ozone
D None of these
A relationship between processes such that each has some part (critical section) which must not be executed while the critical section of another is being executed, is known as
A semaphore
B mutual exclusion
C multiprogramming
D multitasking
E None of the above
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.
Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the
A Recycling
B Purging
C Bypassing
D Recirculation
Which one of the following statement is incorrect regarding the electromagnetic radiation?
A These are produced by the motion of electric charge
B The oscillation of charged particles sets up changing electric fields
C The changing electric fields induce the changing magnetic fields in the surrounding medium
D None of these

Next steps