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Hawking temperature, Hawking temperature: The temperature of a black h...

Hawking temperature: The temperature of a black hole caused through the emission of Hawking radiation. For a black hole along with mass m, it is following T = (hbar c 3 )/(

No.of electrons in outermost orbt element of atomic number, Number of elect...

Number of electrons in the outermost orbit of the element of atomic number 15 is: (1) 1        (2) 3        (3) 5        (4) 7 Ans: 5

WORK AND ENERGY, A boy throws a ball of mass 20 kg vertically upwards.It ra...

A boy throws a ball of mass 20 kg vertically upwards.It raises to a maximum height of 100 m.At what height will the kinetic energy be reduced to 70%?

What is artificial radioactivity and a-decay, Q. What is artificial radioac...

Q. What is artificial radioactivity? The phenomenon by which still light elements are made radioactive by artificial or induced methods is called artificial radioactivity. α

Light-emitting diode, Describe the internals of a light-emitting diode (LEO...

Describe the internals of a light-emitting diode (LEO). Describe what happens internally when sufficient current is applied to activate LED.  What isthe device pictured? Wh

Calculate the refractive index of liquid, Focal length of convex lens is 0....

Focal length of convex lens is 0.1 m. A liquid lens is formed between a plane surface and one face of this lens of radius of curvature 0.12m. The converging combination formed is f

Hall effect, What is the hall effect? Derive expression for it.

What is the hall effect? Derive expression for it.

Motion, a rocket is projected upwards with a velocity of 490. find te time ...

a rocket is projected upwards with a velocity of 490. find te time taken to reach the ground

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