Q.22: If the frequency of radiation is doubled then the relation between initial K.E. and new K.E. is, (CET-2009) (a) (c) (K.E.)₁ = (K.E.)2 (b) (K.E.)₁1 < (K.E.)₂ (K.E.)₂ = (K.E.)₁ (d) (K.E.)₁ = 2 (K.E.)₂
Q: Find the reactance of the coil of inductance 100 mH at frequency 50 Hz and at 100 Hz.
A: To find-Inductive reactance (XL)=?Given-Inductance (L)=100 mH=10-1 Hf1=50 Hzf2=100 Hz
Q: Find the change in magnetic flux associated with the coil in 25 sec. Given: Induced e.m.f. = 2 x 10³…
A: To find-Change in magnetic flux (dϕ)=?Given-Time (dt)=25 secInduced emf (e)=2×10-3 V
Q: Ex. 8: Calculate the energy of the electron in the first orbit in a hydrogen atom. Express the…
A: To find-Energy of electron (E1)=?Given-m=9.1×10-31 kge=1.6×10-19 C∈0=8.85×10-12 C2/Nm2h=6.63×10-34…
Q: Q6: Determine Hat P(0.4,0.3,0) in the field of 8A filamentary current which is directed from…
A:
Q: Compute the surface energy of the (111) plane of Copper with a face-centred cubic (FCC) structure…
A: The surface energy of the (111) plane of copper. Given, plane(111)lattice constanta=3.615 AoMolar…
Q: Ex. 57: The threshold wavelength for photonmission from silver is 3800 Å. Calculate the maximum…
A:
Q: A tungsten light bulb filament may operate at 2900 K. What is its Fahrenheit temperature? What is…
A:
Q: Determine the magnitude of the force, in micronewtons, being experienced by a -7-nC charge at (-6,…
A: Solution: A charge of -7 nC charge is placed at point (-6,4,1) in the cartesian coordinate system.…
Q: The average density of interstellar gas within the Local Bubble is much lower than the value…
A: Interstellar gas are the raw materials for formation of stars. They are many composed of hydrogen…
Q: Calculate the luminosity of Sirius A in solar units.
A: Luminosity is the absolute measure of the radiated power or energy radiated per second of a star or…
Q: If a plan is parallel to one of crystallographic axes, then the plan that intersect that axis at…
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Q: Radiation of wavelength 5 x 10-7 m is incident on the cathode of a photocell. The current in the…
A: Given-λ=5×10-7 mVs=3 Ve=1.6×0-19Ch=6.63×10-34 Jsc=3×108 m/s
Q: The Photoelectric threshold wavelength of certain material is 3000 A. Calculate its work function.
A: To find-Work function (W)=?Given-λ0=3000 A0=3000×10-10 mC=3×108 m/s
Q: Briefly explain the inadequacies of classical physics and their remedies on the Black Body Radiation
A: BLACKBODY RADIATION :-Any object with a temperature above absolute zero emits light at all…
Q: Ex/9: : In an experiment to measure the charge on electron, the electrons travelling at a speed of…
A: To find-Magnetic induction (B)=?Given-Speed of electrons (v)=1.825×107 m/sElectric field (E)=3.2×104…
Q: Ex. 74 Calculate the energy radiated in one minute by a black body of surface area 400 cm² when it…
A: To find-Energy radiated (Q)=?Given-Time (t)=1 min=60 secSurface area (A)=400 cm2=400×10-4…
Q: A certain star has a temperature twice that of the Sun and a luminosity 64 times greater than the…
A: The luminosity of a star is a measure of the total amount of energy that is radiated by a star per…
Q: Ex. 51: Calculate the energy of a light of wavelength 5000 A. photon in
A: To find-Energy of photon (E)=?Given-λ=5000 A0=5×10-7 mc=3×108 m/sh=6.63×10-34 Js
Q: = Ball 1 (m = 65g) is rolling at 4.5 m/s [N35°W] on a frictionless surface when it collides with…
A: Given: The mass of ball 1 is 65 g. The velocity of ball 1 is 4.5 m/s, N 35°W.…
Q: Ex 44: The threshold frequency for silver is 7.89 x 1014 Hz. Calculate the maximum K.E. of photon…
A: To find-Maximum K.E. of photons (K.E.)=?Given-Threshold frequency of silver (v0)=7.89×1014…
Q: Calculate the beamwidth between first nulls & gain in dB for a 2.5m paraboloid reflector used at…
A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…
Q: been Cathode rays which have accelerated by a potential difference of 1000 volt enter in mutually…
A: To find-(1) em(2) Speed of electronsGiven-P.D.=1000 VE=20 V/cm=2×103 V/mB=10-4 Tesla
Q: Consider a system of two toy railway cars (i.e., frictionless masses) connected to each other by two…
A: Given Mass m1 = 4 kg Mass m2 = 2 kg Spring constant k1 = 32 N/m…
Q: 318 times tha mass of Jupiter is approximately star whose mass equals 2M. (a) Compute th at 0.5…
A: Given as, 15. Mass= 2M⊙.
Q: meter long rotates √√T about one of its ends in a plane perpendicular to a uniform magnetic…
A:
Q: In a velocity selector, the intensity of electric field is 2 x 104 V/m and the strength of magnetic…
A:
Q: Consmic ray muons, which decay spontaneously with proper lifetime 2.2 µs, are produced in the atmo…
A:
Q: Calculate the frequency of revolution of the electron in the first orbit of H-atom if the O radius…
A: To find-Frequency of revolution (f)=?given-λ=0.5 A0=0.5×10-10 mV=2.24×106 m/s
Q: Although visible light cannot escape from a black hole, high- energy radiation, like gamma rays,…
A: Black holes are formed when massive stars collapse under its own gravity. The gravity of a black…
Q: Tangent galvanometer shows a deflection of 45° for some current. When the 1 current is reduced to…
A: To find-New deflection (θ2)=?Given-Initial deflection (θ1)=450Initial current=I1New current=I2=13I1
Q: Two Earth orbits, at inclinations i1 and 12, have ascending nodes separated by longitude difference…
A: Given: The value of i1 is 28.5°. The value of i2 is 90°. The value of γ is 75°.…
Q: Ex 48 At what temperature will helium molecules have the same R.M.S. velocity as that of hydrogen at…
A: To find-Temperature of helium (THe)=?Given-CHe=CHTH=273 KMHe=4MH=2
Q: A star is observed at a distance of 90 pc. What will be its parallax angle?
A: Parallax is defined as the change in the apparent position of an object due to a change in the…
Q: 2. Two untainted glass is positioned in parallel to each other with a dimension of 2m X 2m X 2in.…
A: Note: 1 inch is equal to 0.0254 m. The volume of the untainted glass is V=Area A×Thickness LV=2…
Q: A particle moves at displacement x=In(2t+4) meters, where t is in seconds. Determine the velocity of…
A: Given :- Displacement of particle x=In(2t+4) we need velocity at t=3 seconds. We know that…
Q: Ex. 13: Calculate the number of molecules in one liter of gas at N.T.P., if mass of each molecules…
A: To find-No. of molecules (n)=?Given-Volume of a gas=1 lit=VTemperature of gas T=273 KMass of each…
Q: Calculate the velocity of the electron in the first orbit in a hydrogen atom.
A: To find-Velocity of electron in 1st orbit (V1)=?Given-n=1∈0=8.85×10-12 C2/Nm2h=6.63×10-34…
Q: The decay constant of radioactive substance is 4.33 x 10 per year. Calculate its half life period. ×
A: To find-Half life period (T)=?Given-Decay constant λ=4.33×10-4 per year
Q: alculate the frequency of revolution of the electron in the first orbit of H-atom if the radius of…
A: To find-Frequency of revolution (f)=?given-λ=0.5 A0=0.5×10-10 mV=2.24×106 m/s
Q: 1) The refractive index of a lightly damped medium is given by ñ = n - ik, where the x is the…
A: Part(a) Explain behavior of ñ and the reflectivity of the medium for w < Wp and w> Wp. is the…
Q: Ex. 9 The horizontal telegraph wire 100 m long, oriented along magnetic east west falls freely under…
A:
Q: A thermally isolated container stores N₂ gas at 27.24 °C at one atomospheric pressure. Suddenly the…
A:
Q: 1. A 30 nC point charge located at (0,0) cm and 10 nC point charge located at (4,5) cm. Determine:…
A: The magnitude of charge-1 is given as, q1=30 nC=30×10-9 C, The magnitude of charge-2 is given as,…
Q: 3. You are a person with incredible arm strength. You throw a ball of mass m = 2 kg horizontally…
A: Given a ball of mass m=2kg Is thrown up horizontally with an initial velocity v0 Let us assume…
Q: Ex/38: Two progressive waves are represented 2π by the equation Y = a sin (Vt x) and Y = a 2 Σπ COS…
A: To find-Phase difference (δ)=?Given-Y=a sin 2πλ(Vt-x) .....(1)Y=a cos2πλ(Vt-x) ........(2)
Q: A 557-N force is applied to stretch a cable, 66-m long and has a cross-sectional area of 2.8 mm^2.…
A: The force applied in the cable is given as, F=557 N, The original length of the cable is given as,…
Q: How would you numerically calculate the ground state of a displaced harmonic oscillator H woâtà +…
A: The displaced harmonic oscillator is given as H^=ω0a^+a^+λω0a^++a^ where a^+ is creation operator…
Q: Ex. 4: The work function of tungsten is 4.50 eV. Calculate the speed of fastest electron ejected…
A: To find-Speed of fastest electronGiven-Work function (W0)=4.50 dV…
Q: The plank AB in Fig.17-59 has a mass of 7 kg. The rollers D and E are each of mass 5kg and are 0.5 m…
A: Given Rod mass mrod = 7 kg Roller mass mroll = 5 kg Roller diameter d = 0.5 m
Q: The filament of an evacuated light bult has length 10 cm, diameter 0.2 mm and emissivity 0.2,…
A: TO find-ower radiated=?Given-l=0.1 mm=10-1×10-3=10-4 md=0.2 mmr=0.1 mm=0.1×10-3 me=0.2T=20000…
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