Q no 26. if a body is moving with angular velocity in anticlockwise direction then if its speed decreases the direction of angular acceleration will be?
along + axis
along – z axis
none

Q no 27. if a lift moving upwards tends to slow then apparent weight will be?
equal to real weight
less than real weight
zero
none

Q no 28. when moment of inertia decrease the angular speed will?
increase
decrease

Q no 29. a hallow sphere ,solid sphere, a disc and ring of same mass rolls down an inclined surface which will have greater translational velocity?
hollow sphere
ring
disc
solid sphere
none of these

Q no 30. if velocity of the body is doubled and radius of circle is halved then what will the centripetal force?
4 times
2 times
16 times
8 times

Q no 31. when water falls from tap its velocity increase so its area will?
increase
decrease
remains same

Q no 32. unit of viscosity is?
Nsm-2
kg per m per sec
none of these
both a and b

Q no 33. terminal velocity is proportional to?
sqaure root of radius
sqaure of radius
radius
inversely proportional to radius square

Q no 34. the gauge pressure and absoulte pressure are?
have same values
absoulte pressure is greater than gauge pressure
gauge pressure is greater than absolute pressure

Q no 35. the key difference between gas and liquid is?
both are fluids
gas have cohesion liquid not have
liquid have cohesion gas have not
all of these

Q no 36. the unit of specific gravity of material is?
same as units of gravitational acceleration
kg per meter cube
have no units

Q no 37. 1 bar is equal to?
10^6 pascals
10^5 Pa
100 Pa
none of these

Q no 9. pressure is a?
vector
scalar
may be both

Q no 38. for washing clothes we add washing powder and heat the water both will?
increase the surface tension of water
decrease the surface tension of water
not affects

Q no 39. volume flow rate equals?
V
V/t
AVt
all of these

Q no 40. rain drops gains spherical shapes due to?
because sphere have least possible area than any shape
due to surface tension
both
none

Q no 41. The longest river in pakistan is?
Indus
Chenab
satluj
Ravi

Q no 42. Namal dam is situated in?
zohb
mianwali
sakardu
haripur

q no 43. Sulemanki headworks is on which river?
chenab
satluj
ravi
swat

Q no 44. pakistan second most highest mountain is?
k2
broad peak
nanga parbat
none

Q no 45. K2 is in which mountain range?
hindu kush
karakaram
hindu raj