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Optics
how do u find the focal length of lens expirementally
Optics
Obtain expressions for reflection and transmission amplitude coefficients when
electric vector associated with a plane monochromatic electromagnetic wave is in the
plane of incidence.
electric vector associated with a plane monochromatic electromagnetic wave is in the
plane of incidence.
Optics
The sodium lamp used in a physics laboratory gives out light uniformly. Suppose
that the lamp uses 40 W. Calculate the magnitude of electric field.
that the lamp uses 40 W. Calculate the magnitude of electric field.
Optics
Describe polarisation of light by reflection. How does degree of polarisation vary
with angle of incidence of light?
with angle of incidence of light?
Optics
A plano-convex lens of radius 1.0 m is placed on an optically flat glass plate and is
illuminated by an extended monochromatic source. Assume that the point of contact
is perfect. The diameters of the 10th and 5th dark rings in the reflected light are
4.50 × 10−3m and 3.36 × 10−3m. Next, the space between the lens and the glass plate
is filled with a liquid. The diameter of the 5th ring changes to 3.0×10−3m. Calculate
the refractive index of the liquid when the ring is (i) dark, and (ii) bright, if the
wavelength of light is 589 nm.
illuminated by an extended monochromatic source. Assume that the point of contact
is perfect. The diameters of the 10th and 5th dark rings in the reflected light are
4.50 × 10−3m and 3.36 × 10−3m. Next, the space between the lens and the glass plate
is filled with a liquid. The diameter of the 5th ring changes to 3.0×10−3m. Calculate
the refractive index of the liquid when the ring is (i) dark, and (ii) bright, if the
wavelength of light is 589 nm.
Optics
Depict spatial evolution of Fresnel diffraction pattern.
Optics
what is the interferometer ?
Optics
The focal length of a convex lens is 10cm, find the position of image when the object is placed at a distance of 30cm from a convex lens.
Optics
A tank truck was filled with 45,725 L of gasoline in Peshawar where the temperature was 28.0°C. The gasoline was delivered to Swat where the temperature was -12°C. Volume expansion coefficient of Gasoline is 950×10-6 °C-1.
Find out the amount of gasoline delivered in litres
Infer the volume of the gasoline due to changed temperature
Find out the amount of gasoline delivered in litres
Infer the volume of the gasoline due to changed temperature
Optics
Q1.What happen to the ray of light traveling along the principal axis?
Or
Q2.How is the power of a lens related to its focal length?
Or
Q2.How is the power of a lens related to its focal length?
