{[['
']]}
']]}
131: The ENERGY associated with a photon depends upon the photon's:
w) velocity
x) frequency
y) amplitude
z) the brightness of the source from which it comes
ANSWER: X – FREQUENCY
132: When a beam of ordinary white light is passed through a Polaroid plate filter, the intensity of the beam that emerges is:
w) equal to that of the incident beam
x) about 0.9 that of the incident beam
y) about one-half that of the incident beam
z) practically zero
ANSWER: Y -- ABOUT ONE-HALF THAT OF THE INCIDENT BEAM
133: Arrange the following group of colored lights in the order of INCREASING wavelength:
RED, ORANGE, GREEN, BLUE
ANSWER: BLUE, GREEN, ORANGE, RED
134: A thin double-concave lens produces images which are:
w) larger than the object
x) smaller than the object
y) the same size as the object
z) one cannot tell from this information
ANSWER: X -- SMALLER THAN THE OBJECT
135: When white light is passed through a double slit which of the following statements is TRUE:
w) Each of the bright bands is dispersed into a spectrum
x) Only the central band is dispersed into a spectrum
y) All the bright bands except the central one are dispersed into a spectrum
z) Each band has a single color different from its neighboring bands
ANSWER: Y -- ALL THE BRIGHT BANDS EXCEPT THE CENTRAL ONE ARE DISPERSED INTO THE SPECTRUM
136: A rise in temperature of 20 Kelvin degrees is equal to a rise of:
w) 20 degrees Celsius
x) 36 degrees Celsius
y) 68 degrees Celsius
z) 293 degrees Celsius
ANSWER: W -- 20 DEGREES CELSIUS
137: A beam of white light is passed through a diffraction grating and the resulting spectrum is allowed to fall on a screen. Which one of the following is the color of light that undergoes the greatest deviation from its original direction. Is it:
w) red
x) yellow
y) blue
z) violet
ANSWER: W -- RED
138: Which of the following are the parts of a DC generator that convert the AC in the armature to DC in the external circuit. Are these parts the:
w) field poles
x) slip rings and the brushes
y) commutator and the brushes
z) armature and the core
ANSWER: Y -- COMMUTATOR AND THE BRUSHES
139: A P-type semiconductor is doped to produce one of the following.Will it produce:
w) both holes and electrons
x) positive electrons
y) negative electrons
z) holes
ANSWER: Z -- HOLES
140: When an atomic nucleus emits a beta particle, one of its neutrons disintegrates into one of the following set of particles. Does it disintegrate into:
w) a positron and an electron
x) a proton, an electron, and an anti neutrino
y) a proton, an electron, and a positron
z) a neutrino and an anti neutrino
ANSWER: X -- A PROTON, AN ELECTRON AND AN ANTI NEUTRINO
Post a Comment