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give the account of production of pure spectrum
What is the means in which light waves travel? Ans: Light is the only type of wave that doesn't require a medium. Confirmation that light will travel through vacuum is the
(1) Standing pulse can be longitudinal / transverse. (2) The disturbance confined to a particular part among the starting point and reflecting point of the ray. (3) There is
Quality: It is the characteristics of a sound by which we can distinguish among two sounds of the similar pitch and the loudness is known as quality of sound.
A cylindrical metallic wire is stretched to enhance its length by 5%. Measure the percentage change in its resistance.
An elementary particle is: (1)An element present in a compound (2)An atom present in an element (3)A sub-atomic particle (4)A fragment of an atom Ans: (3)A s
An alpa particle is directed vertically upward with a speed of 3 X 104 Km/Sec in a region where a magnetic field of magnitude 1 Tesla exists in the direction south to north. Determ
A manufacturer of light bulbs advertises that its 55-W bulb, which produces 800.0 lm of light output, gives almost the similar light as a 60.0-W bulb with an energy savings. Th
Q. What is quantum mechanical "Tunneling"? Give one example. OR What do you mean by quantum mechanical tunneling? Show that the tunneling probability is given by the
When a metal is illuminated with radiation with a wavelength of 152 nm, photoelectrons are ejected with a velocity of 7.9 x 10 5 m/s. What is the work function, in eV, of th
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