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19.

Total Number of Questions : 32
: 3.00 Hours Max. Marks : 200

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The kinetic energy of a body projected at the angle of maximum range is ‏.ع‎ What will be its kinetic
energy at the highest point of its path ? (2 Marks)

Find the height to which a ball dropped from a height of h m will rebound assuming the value of
‏دع‎ 10 m/s? and the coefficient of restitution = 1. (2 Marks)

If 8 is the resistance, X, and X_ the inductive and capacitive impedances in a series L-C-R circuit, find
the impedance at resonance. (2 Marks)

॥ K, and K, are the thermal conductivities of two rods joined in series, what will be the effective

thermal conductivity of the combination ? (2 Marks)
, Write down the diode equation and explain the symbols used. (2 Marks)

What is the difference between an amplifier and an oscillator ? (4 Marks)
_ Give the truth table for the universal logic gates. (4 Marks)
. Write down the Maxwell's electromagnetic field equations. (4 Marks)
. Explain the principle employed by an acrobat. (4 Marks)
. Explain the Bragg’s diffraction condition and name any two X-ray diffraction methods. (4 Marks)
. Show that the capacitance of a parallel place capacitor is proportional to the area of the plates. (5 Marks)

. We know that the refractive index 1 = Je ‏۔‎ Relative permittivity of water is 80.37 at room

temperature. But the refractive index of water is 1.33 at room temperature. Explain the reason. (5 Marks)
. Explain the formation and difference between primary and secondary rainbow. (5 Marks)
, Show that the side band power is 33.3% of the total power in AM waves. (5 Marks)
. Explain the reason for using ails for frying. Why water cannot be used ? (5 Marks)
. ‏مل‎ (०0 countries pipes with oval cross sections are used for carrying water. Why ? (5 Marks)
. Explain the perpendicular axis theorem in moment of inertia. (5 Marks)
, Show that electrons cannot stay inside a nucleus using uncertainty principle. (7 Marks)
What is the principle of hydrogen bomb ? (7 Marks)
Explain Doppler Effect. How is it employed in Astrophysics ? (7 Marks)

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