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Subject: Physics, asked 1 week, 2 days ago

(a) Use Bohr's postulate to prove that the radius of nth orbit in hydrogen atom is proportional to n2.

(b) How will the energy of a hydrogen atom change if n increases from
1 to ∞ ?
 

Subject: Physics, asked 1 week, 2 days ago

Kindly answer the question

A ray of light passes through a prism of refractive index √2 as shown in the figure. Find:




(i) The angle of incidence (∠r2,) at face AC.

(ii) The angle of minimum deviation for this prism.
 

Subject: Physics, asked 1 week, 2 days ago

Kindly answer the question.

(a) Draw V-l characteristics of a p-n Junction diode.

(b) Differentiate between the threshold voltage and the breakdown
voltage for a diode.

(c) Write the property of a junction diode which makes it suitable for
rectification of ac voltages.

 

Subject: Physics, asked 1 week, 2 days ago

In a fission event of  23892U by fast moving neutrons, no neutrons are emitted
and final products, after the beta decay of the primary fragments, are 14058Ce
and 9944Ru. Calculate Q for this process. Neglect the masses of electrons/
positrons emitted during the intermediate steps.



 

Subject: Physics, asked 1 week, 2 days ago

Ultra-violet light of wavelength 200 nm from a source is incident on a metal surface. If the stopping potential is -2.5 V,
(a) calculate the work function of the metal, and
(b) How would the surface respond to a high intensity red light of wavelength 6328 ? produced by a laser?

Subject: Physics, asked 1 week, 2 days ago

Find the two possible positions of an object kept in front of a lens of 5.0 D, so that the image formed in both cases is four times magnified.

Subject: Physics, asked 1 week, 2 days ago

Kindly answer the question.

Subject: Physics, asked 1 week, 2 days ago

Kindly answer the question.

Subject: Physics, asked 1 week, 2 days ago

The angular magnification of astronomical telescope of distant object is 5. If the distance between objective and eye piece is 36 cm and the final image is formed at infinity then the focal length of its objective and eye piece will be?

Subject: Physics, asked 1 week, 2 days ago

Please provide the answer with explanation .
Fast please
Tomorrow is my exam

Subject: Physics, asked 1 week, 3 days ago

which type of reaction produces most harmful radiation
a)Fusion reaction
b)Chemical reaction
C) Fission Reaction
D)Photochemical reaction

Subject: Physics, asked 1 week, 3 days ago

Which type of reaction produces the most harmful radiation?

Subject: Physics, asked 1 week, 3 days ago

The wavelength of incident photon is lambda and work function of metallic surface is W; what is the minimum kinetic energy?

Subject: Physics, asked 1 week, 3 days ago

explain the answer of this question

Subject: Physics, asked 1 week, 3 days ago

Please solve this.

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