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Can you explain Doppler effect? Find a mathematical expression for the apparent frequency heard when the source is in motion and the listener is at rest and also give limitation of Doppler effect?
Draw the energy band diagrams of a tunnel diode for different biasing conditions. Band Diagrams of a Tunnel diode: The energy band diagram for a heavily doped unb
give the theory of concave grating and Rowland mounting
Does the force constant of a spring changes if it is cut into parts? Ans) Force constant does not change because it is a constant
LENZ’S LAW A change of flux in a closed circuit induces an emf and sets up a current. The direction of this current is such that its magnetic field tends to oppose the c
A section through a magnetic circuit of uniform cross-sectional area 2cm 2 is shown in fi gure. The cast steel core has a mean length of 25cm. The air gap is 1mm w
Two moles of an ideal gas expands reversibly and isothermally to ten times its volume at 25°C. Evaluate the change in entropy during the process. ( R = 8.314 JK -1 mol -1 )
The matter consists of one or more basic substances called elements. An element is a substance whose all atoms are alike. Cohesion between atoms arises atoms because of interaction
A 0.17-kg hockey puck leaves the stick on a slap shot travelling 21 m/s. If no other forces act on the puck, friction eventually will bring it to rest 62 m away. a. Based on th
Q. A capacitor blocks d.c. but allows a.c. Why? Capacitive reactance XC = 1/ω C = 1 / 2πν C Where ν is the frequency of the a.c. supply. In a d.c. circuit
Q. Hoop, Disk, Cylinder and Sphere A disk, a hoop a cylinder and a sphere have the same mass and the same diameter. Every is rolled toward a ramp with the same initial velocity
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