364530
According to Cartesian sign convention, in ray optics
1 All distances in the direction of incident ray are taken positive
2 All distances are taken negative
3 All distances in the direction of incident ray are taken negative
4 All distances are taken positive
Explanation:
According to Cartesian sign convention, the distances measured in the same direction as the incident light are taken as positive and those measured in the direction opposite to the direction of incident light are taken as negative
KCET - 2017
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364531
A leaf which contains only green pigments, is illuminated by a laser light of wavelength \(0.6328 \mu \mathrm{m}\). It would appear to be
1 brown
2 black
3 red
4 green
Explanation:
If an object reflects the colour of light incident on it, it will appear with that colour but if object absorbs the colour of light, it will appear to be black. Since, the given wavelength does not belong to green, so it will be absorbed by the leaf and hence, it would appear to be black.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364532
A film projector magnifies a \(100\;c{m^2}\) film strip on a screen. If the linear magnification is 4, the area of magnified film on the screen is
1 \(400\;c{m^2}\)
2 \(1600\;c{m^2}\)
3 \(200\;c{m^2}\)
4 \(800\;c{m^2}\)
Explanation:
Let \({m_L}\) & \({m_A}\) are linear and areal magnifications. \({m_L} = 4\) \({m_A} = {\left( {{m_L}} \right)^2}\) so that \(A' = {A_0} \times 16 = 1600\,c{m^2}\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364533
The angle made by incident ray of light with the reflecting surface is called
1 Glancing angle
2 Angle of incidence
3 Angle of deviation
4 Angle of refraction
Explanation:
The angle made by incident ray of light with the reflecting surface is called glancing angle
364530
According to Cartesian sign convention, in ray optics
1 All distances in the direction of incident ray are taken positive
2 All distances are taken negative
3 All distances in the direction of incident ray are taken negative
4 All distances are taken positive
Explanation:
According to Cartesian sign convention, the distances measured in the same direction as the incident light are taken as positive and those measured in the direction opposite to the direction of incident light are taken as negative
KCET - 2017
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364531
A leaf which contains only green pigments, is illuminated by a laser light of wavelength \(0.6328 \mu \mathrm{m}\). It would appear to be
1 brown
2 black
3 red
4 green
Explanation:
If an object reflects the colour of light incident on it, it will appear with that colour but if object absorbs the colour of light, it will appear to be black. Since, the given wavelength does not belong to green, so it will be absorbed by the leaf and hence, it would appear to be black.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364532
A film projector magnifies a \(100\;c{m^2}\) film strip on a screen. If the linear magnification is 4, the area of magnified film on the screen is
1 \(400\;c{m^2}\)
2 \(1600\;c{m^2}\)
3 \(200\;c{m^2}\)
4 \(800\;c{m^2}\)
Explanation:
Let \({m_L}\) & \({m_A}\) are linear and areal magnifications. \({m_L} = 4\) \({m_A} = {\left( {{m_L}} \right)^2}\) so that \(A' = {A_0} \times 16 = 1600\,c{m^2}\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364533
The angle made by incident ray of light with the reflecting surface is called
1 Glancing angle
2 Angle of incidence
3 Angle of deviation
4 Angle of refraction
Explanation:
The angle made by incident ray of light with the reflecting surface is called glancing angle
364530
According to Cartesian sign convention, in ray optics
1 All distances in the direction of incident ray are taken positive
2 All distances are taken negative
3 All distances in the direction of incident ray are taken negative
4 All distances are taken positive
Explanation:
According to Cartesian sign convention, the distances measured in the same direction as the incident light are taken as positive and those measured in the direction opposite to the direction of incident light are taken as negative
KCET - 2017
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364531
A leaf which contains only green pigments, is illuminated by a laser light of wavelength \(0.6328 \mu \mathrm{m}\). It would appear to be
1 brown
2 black
3 red
4 green
Explanation:
If an object reflects the colour of light incident on it, it will appear with that colour but if object absorbs the colour of light, it will appear to be black. Since, the given wavelength does not belong to green, so it will be absorbed by the leaf and hence, it would appear to be black.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364532
A film projector magnifies a \(100\;c{m^2}\) film strip on a screen. If the linear magnification is 4, the area of magnified film on the screen is
1 \(400\;c{m^2}\)
2 \(1600\;c{m^2}\)
3 \(200\;c{m^2}\)
4 \(800\;c{m^2}\)
Explanation:
Let \({m_L}\) & \({m_A}\) are linear and areal magnifications. \({m_L} = 4\) \({m_A} = {\left( {{m_L}} \right)^2}\) so that \(A' = {A_0} \times 16 = 1600\,c{m^2}\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364533
The angle made by incident ray of light with the reflecting surface is called
1 Glancing angle
2 Angle of incidence
3 Angle of deviation
4 Angle of refraction
Explanation:
The angle made by incident ray of light with the reflecting surface is called glancing angle
364530
According to Cartesian sign convention, in ray optics
1 All distances in the direction of incident ray are taken positive
2 All distances are taken negative
3 All distances in the direction of incident ray are taken negative
4 All distances are taken positive
Explanation:
According to Cartesian sign convention, the distances measured in the same direction as the incident light are taken as positive and those measured in the direction opposite to the direction of incident light are taken as negative
KCET - 2017
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364531
A leaf which contains only green pigments, is illuminated by a laser light of wavelength \(0.6328 \mu \mathrm{m}\). It would appear to be
1 brown
2 black
3 red
4 green
Explanation:
If an object reflects the colour of light incident on it, it will appear with that colour but if object absorbs the colour of light, it will appear to be black. Since, the given wavelength does not belong to green, so it will be absorbed by the leaf and hence, it would appear to be black.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364532
A film projector magnifies a \(100\;c{m^2}\) film strip on a screen. If the linear magnification is 4, the area of magnified film on the screen is
1 \(400\;c{m^2}\)
2 \(1600\;c{m^2}\)
3 \(200\;c{m^2}\)
4 \(800\;c{m^2}\)
Explanation:
Let \({m_L}\) & \({m_A}\) are linear and areal magnifications. \({m_L} = 4\) \({m_A} = {\left( {{m_L}} \right)^2}\) so that \(A' = {A_0} \times 16 = 1600\,c{m^2}\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364533
The angle made by incident ray of light with the reflecting surface is called
1 Glancing angle
2 Angle of incidence
3 Angle of deviation
4 Angle of refraction
Explanation:
The angle made by incident ray of light with the reflecting surface is called glancing angle
