State Engineering Entrances - South India (KCET, COMEDK, EAMCET & KEAM)

Electromagnetism & Wave Optics question bank (Engineering Physics)

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Q1.
[Engineering Physics - CET Assessment #2] A body of mass m is projected from the surface of Earth (radius R, mass M) with escape velocity v_e. What is the expression for v_e?

(A)
v_e = √(2GM / R) = √(2gR)
(B)
v_e = √(GM / R) = √(gR)
(C)
v_e = 2√(GM / R)
(D)
v_e = √(GM / 2R)
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Q2.
[Engineering Mathematics - CET Assessment #4] Evaluate the limit: lim (x -> 0) [sin(5x) / tan(3x)]

(A)
5 / 3
(B)
3 / 5
(C)
15
(D)
1
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