21. What is the unit of power?
(A) Joule
(B) Metre
(C) Newton
D) Watt
22. A satellite is revolving round the earth in a circular orbit. If the radius of the orbit is increased from R to 2R, its velocity will be?
(A) v/√2
(B) 2v
(C) v/2
D) v2
23. According to the second condition of equilibrium __ =0
(A) ∑F
B) ∑T
(C) ∑Fx
(D) ∑Fy
24. Pressure is a _ quantity.
(A) Vector
B) Scalar
(C) Base
(D) None of the above
25. The weight of a body of 20 kg mass is _ newton on earth.
(A) 15
(B) 30
(C) 100
D) 200
26. 1 Terameter=_ meter.
A) 10^12
(B) 10^9
(C) 10^8
(D) 10^7
27. Professor Dr. Abdus Salam awarded Nobel prize in which year?
(A) 1976
(B) 1977
(C) 1978
D) 1979
28. Kitab-Ul-Manazir is the name of the book written by:
a) Yaqub Kindi
b) Ibn al-Haitham
c) Al Beruni
d) Ibn-e-Sina
29. The average speed of a bus is 20 m/s, how far can it travel in 10s?
a) 100m
b) 200m
c) 150m
d) 250m
30. Sphygmomanometer measures:
A. Density of water
B. Blood pressure
C. Milk density
D. None of the above
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