Ex. 58: The threshold wavelength for a certain metal is 5000 ACalculate the maximum K.E. of the photoelectrons emitted, when ultra violet O radiation of wavelength 2500 A falls on it. (1 eV, h and C are given).
Q: Calculate the value of the "solar constant" on Mercury, at perihelion.
A: The solar constant is the amount of solar electromagnetic radiation available per unit area at a…
Q: Q4. Calculate the values of electron and hole concentrations in cm³ at 300 K for intrinsic Ge, Si…
A: Determine, The values of electron and hole concentrations at 300K
Q: A flywheel of mass 2 kg has radius of gyration 0.2 m. Calculate the kinetic energy of rotation when…
A: To find-K.E. of rotationGiven-M=2 kgK=0.2 mn=5 r.p.s.ω=2πn=2×π×5=10π rad/s
Q: When the current through a circular loop is 6.0 A, the magnetic field at its center is 2.0 × 10-4 T.…
A: Given that-Current through circular loop is 6.0 AMagnetic field at the center is 2.0×10-4 TWe know…
Q: You purchase a rectangular piece of metal that has dimensions 4.6 mm x 17.0 mm x 33.5 mm and mass…
A: To find density of gold and we're we cheated or not
Q: In the laboratory frame, two observers A and B are moving along the sides of an equilateral triangle…
A: In this question two frames will be defined as S and S'. S frame having axes X and Y and S' frame…
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: Consider a plane electromagnetic wave travelling in free space. The magnetic field is given by B =…
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Q: A silicon wafer is doped with 5x1020 phosphorus atoms/m³. Calculate the hole concentrations after…
A: Given:intrinsic carrier concentration, ni = 1.5×1010 cm−3 =1.5×1010110−6 m3∴ni = 1.5×1016…
Q: A hockey puck is sliding on a frictionless ice, in an eastward direction. It collides with a second…
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Q: A solid cylinder of mass 2.0 kg and radius 20 cm is rotating counterclockwise around a vertical axis…
A: Given that-Mass of solid Cylinder=2.0 kgRadius= 20 cmCounterclockwise rotation=600 rev/minClockwise…
Q: Find the resistivity (22.cm) of an intrinsic semiconductor with intrinsic concentration of 8x1018…
A: Given : Intrinsic concentration, ni = 8×1018 m-3 Mobility of electrons and holes, μe = 0.75 m2/V-s…
Q: A metal rod 1 m long rotates about one end in the plane perpendicular to a uniform magnetic field of…
A: To find-Induced emf (e)=?Given-l=1 mB=0.38×10-4 Wb/m2n=720 rpm=72060=12 Hz
Q: A free particle has the initial wave function (.x, 0) = Ae-a.x² where A and a are constants (a is…
A: Given Initial wave function ψ x,0 = Ae-ax2 Where, A and a = constant
Q: Find the resistivity (22.cm) of an intrinsic semiconductor with intrinsic concentration of 8x1018…
A: The mobilities of electrons and holes are given with intrinsic carrier concentration. Resistivity is…
Q: Prism is one of the optical devices you get
A: Here we will see prism follows which phenomenon.
Q: A 0.546-mol sample of an ideal diatomic gas at 375 kPa and 295 K expands quasi-statically until the…
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Q: Evaluate the differential cross section in the Born approximation for the potential V (r) = V₂r³e-ar…
A: The expression for the scattering amplitude is fθ=-2μh2q∫0∞V(r) e-qr rdr…
Q: 04) (A) Let the value of L, M and N is 5.0 and -6 respectively, answer true or false, then correct…
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Q: The uniform 22-m pole has a mass of 185 kg and is supported by its smooth ends against the vertical…
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Q: Q3: A particle slides on the inside of a smooth vertical paraboloid of revolution = az Show that the…
A: Determine, Constant force F=α1+4r2a2-3/2
Q: Ex. 74 Calculate the energy radiated in one had of minute by a black body of surface area 400 cm²…
A: To find-Energy radiated (Q)=?Given-Time (t)=1 min=60 secSurface area (A)=400 cm2=400×10-4…
Q: Use Stefan's law to calculate how much energy is emitted per unit area by the photosphere of sun…
A: The photosphere of a star is the outer region from which the light is emitted. The temperature of…
Q: What is the physical principle that makes the frequency constant when the light travels from one…
A: Let us denote energy of the light beam by E and its frequency by ν.
Q: The office receives 110 customers per hour. All customers first see a receptionist. The receptionist…
A: Solution:- Reception = 73.3% Eye Test = 137.5% Written…
Q: The car is traveling at a speed of 64 mi/hr as it approaches point A. Beginning at A, the car…
A: Solution: Given that, VA=64 mi/hr=93.866 ft/sacceleration(a): A to B=-6.2 ft/s2…
Q: Part A: Show that x = A0 exp[-γt/2m] cos(ωt +φ) is a solution for a damped oscillation. Determine…
A: This is a question based on Damped oscillation:…
Q: 3.12 A sluice gate dams water up 5 m. There is a small hole at the bottom of the gate so liquid…
A: Given: The height of the dam is 5 m. The water at temperature is 20°C. The…
Q: The proton-proton chain releases energy because mass is cre- ated in the process. (T/F)
A: Fusion is the process by which two light nuclei will combine to form a heavy nucleus.…
Q: Q. 52: A heat engine converts 1/6th of input heat into work. When temperature of sink is reduced by…
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Q: : Calculate the de Broglie wavelength of Bullet moving with the speed 90 m/s and having a mass 5 gm.
A: To find-De Broglie wavelength (λ)=?Given-Speed bullet (V)=90 m/sMass of bullet (m)=5 gm=5×10-3 kg
Q: (a) Determine the reactions at A and E if P = 850 N. The reactions are positive if to the right or…
A: a) Consider the horizontal equilibrium of the forces, ∑Fx=0 Ax+Ex-4010 sin 31°Ax+Ex=4010 sin…
Q: Ex. 14: Radius of gyration of a ring about a transverse axis passing through its centre is...
A: We have to find the radius of gyration of a ring about a transverse axis passing through the center.…
Q: A DM system is designed to operate at 3 times the Nyquist rate for the signal with a 3 kHz…
A: Given, The maximum amplitude of frequency, fm=1kHz Nyquist rate, N=2×BWN=2×3N=6kHz Sampling…
Q: Calculate the acceleration due to gravity on Mercury due to Sun.
A: Mercury is the closest planet to the Sun. It is located 54.055 million km from the Sun. The…
Q: A bike rider started his descent from a hill at 16 km/hr and reached downhill at 59 km/hr. What was…
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Q: The forward current of a photodiode increases as the incident light increases. O false O true
A: The statement is false.
Q: 1) How are luminosity, mass and temperature of a star related?
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Q: You have been asked by the police to find one of the three locations the Acute Perps gang is likely…
A: The coordinates for the given triangle areA(6,3), B(6,-3) and C(-2,-3), respectively.Let us…
Q: The bxdxh rubber blocks shown are used in a double U shear mount to isolate the vibration of a…
A: Concept: The Formula to determine the Shear strain is tan γ=αbhere,α=downward deflectionb=breadth…
Q: 3. A flat steel bar 150 mm wide by 50 mm thick has axial loads applied at points A, B, C and D as…
A: Solution: The free-body diagram of the forces of the bar in section BC is shown in the figure.
Q: A thermally isolated container stores N₂ gas at 27.24 °C at one atomospheric pressure. Suddenly the…
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Q: In the wire shown in (Figure 1) segment BC is an arc of a circle with radius 30.0 cm. and point P is…
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Q: Cable AB passes over the small ideal pulley C without a change in its tension. What length of cable…
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Q: 1) A 1.00-mol sample of an ideal diatomic gas is allowed to expand. This expansion is represented by…
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Q: Q. 12: Photoelectric emission takes place (a). (b) (c) (d) when incident wavelength is greater than…
A: To find-Condition for photoelectric emissionGiven-When a metal surface is exposed to light,…
Q: = Axial loads are applied with rigid bearing plates to the solid cylindrical rods shown in the…
A: Determine the minimum diameter required for each of the three rods. Given, Loads:P=35 kipsQ=25…
Q: A beam of atoms moving in a certain direction can be slowed down if they absorb photons from a laser…
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Q: By how much does a 65.0 kg mountain climber stretch her 0.800 rope when she hangs 35.0 m below a…
A: Given that-Young's Modulus of nylon, Y= 1.35×109 PaLength of nylon rope, L0= 35.0 mDiameter of the…
Q: (b) A grindstone in the shape of a solid disk with diameter 0.520 m and a mass of 50.0 kg is…
A:
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