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Light from a monochromatic source of wavelength 4000A0 is incident on a grating having 5000 rulings / cm. The spectrum is focused on a screen by a lens of focal length 2 m. evaluate the linear distance on the screen at which the 1st order maxima will observed.
For silicon the forbidden gap is (A) 1.1ev. (B) 0.25ev. (C) 0.5ev. (D) 0.7ev. Ans: For silicon the forbidden gap is 1.1ev.
The power factor of an a.c. circuit is 0.5. What will be the phase difference among voltage and current in this circuit?
Magnification is the ratio of size of image to the size of object. hence it is a dimensionless constant. It has no units. 1/m is not its unit.(1/m is the unit of power=DIOPTRE)
How can you differentiate between circularly polarised light and unpolarized light?
Polarization: The dipole moment per unit volume of the solid is the sum of all the individual dipole moments within that volume and is called as 'Polarization' P of the solid.
Can I light a house with a fiber optic? A house can be light with anything, by candles and gas lamps to fiber optics. However, there is the question, of the efficiency of the s
what is energy distribution function
The liquids which permits the current to pass by them and also dissociates into ions on passing current by them are named electrolytes e.g. resolution of salts, bases and acids in
I want a project on this topic for cbse board
Your friend has gifted an earphone set to you. While music is on you will try to oppose the two ear phone pieces to attract. Task-I: Will they repel? If yes, why so? Task-II: Why S
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