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A convex lens of refractive index 1.5 has a focal length of 18 cm in air. Measure the change in its focal length when it is immersed in water of refractive index.
Distinguish among the terms 'average value' and 'rms value' of an alternating current.
The immediate current from an a.c. source is I = 5 sin (314 t) ampere. What are the average and rms values of the current?
How comes the word physics?
Determine the force in the hydraulic cylinder AB to 3 significant places in kN if the weight of the bucket and the load is P48 kN acting at G. Neglect the weight of all other membe
The refractive index of glass is 1.54. Determine the polarizing angle when light goes from glass to air medium?
Intensities of an ordinary light and laser light The intensity (I) of a wave is the energy per unit time flowing through a unit normal area. The light from an ordinary light so
why phase is defined only for periodic motion ?
Explain about the monochromaticity of laser. Monochromaticity: The light emitted through a laser is monochromatic, that is this is of one wavelength (colour). Although in ca
An electron is in a box of width 3*10^-10m.what are de broglies wavelength and magnitude of momentum of the electron if it is in A)n=1 level B)n=2 level C)n=3 level Ans) Use the
Superposition principle The general idea is that, while a number of influences are working on a system, the total influence on that system is just the sum of the individual in
MOTION: A body is said to be in motion if it alters its position with respect to its surroundings.
Q. Define magnetic flux? Magnetic flux ( φ ): The magnetic flux (φ) correlated with a surface held in a magnetic field (B) is defined as the number of magnetic lines of f
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