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The width of the central bright band of a diffraction pattern is 2.9 cm.
Laser light of unknown wavelength passes through a single slit that is 0.042 mm wide and onto a screen that is 1.5 m from the slit.
What is the wavelength of the light?
An electron in a hydrogen atom makes a transition from E 3 to E 1 . How much energy does the atom lose?
Hence refractive index µ can be determine by measuring the diameter of Newton's rings first with air and then with the liquid for same value of m.
how much force is necessary to stop the car when steps on a brake a 1000-kg car travelling at 65 km/h if the braking distance is 35 m?
Sol: The incident angle is 45 because the angle of reflection and angle of incident is equal.
Show that the Nusselt number for a sphere in a quiescent fluid is 2. Hint: Write the thermal resistance for the outer surface of the sphere in terms as both conductive and conve
What is the name of the temperature and pressure conditions at which water can be in the solid, liquid and gas phases simultaneously? Ans: The name of the temperature and pr
types of friction
Earth's atmosphere is separated into four layers: The troposphere (0-10 km), the stratosphere (10-50 km), the mesosphere (50-80 km), and the thermosphere (80-500 km).
Define the terms threshold frequency and stopping potential in relation to the phenomenon of photoelectric effect. How is the photoelectric current affected on enhancing the (i)
what is meant by a circuit ?
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