1. the square of time period of planets is directly proportional to ____of mean distance between sun and planet in kepler’s law or periods
a. square
b. forth
c. same
d. cube
Correct Option: d
2. all planets moves in _______orbits around the sun
a. elliptical
b. circular
c. parabolic
d. hyperbolic
Correct Option: a
3. the product of ______and height from reference point is gravitational potenyial energy
a. gravity
b. force
c. weight
d. mass
Correct Option: c
4. central force is directed _______the line joining the two particles
a. perpendicular
b. mean
c. along
d. parallel
Correct Option: c
5. the uniform spherical shell of matter exert _____gravitational force on particle located inside it
a. minimum
b. strong
c. no
d. maximum
Correct Option: c
6. eccentricity value ranges from zero to_______
a. thousand
b. unity
c. infinity
d. hundred
Correct Option: b
7. the ellipse with e=0 is called_______
a. ellipse
b. circle
c. hyperbola
d. parabola
Correct Option: b
8. the eccentricity is measure of _______of orbit
a. size
b. distance
c. height
d. shape
Correct Option: d
9. the semi-major axis is measure of ________of orbit
a. shape
b. distance
c. height
d. size
Correct Option: d
10. kepler’s law of orbits has _________parts
a. three
b. three
c. two
d. no
Correct Option: c
11. the farthest distance of planet from sun is called______
a. rotation
b. dispalcement
c. Aphelion
d. perihelion
Correct Option: c
12. the speed at which any planet moves through space is ____________
a. remain same
b. maximum
c. minimum
d. constantly changing
Correct Option: d
13. the mass of planet is ________
a. constant
b. change with speed
c. haviest
d. lightest
Correct Option: a
14. the surface potential energy per unit area of surface is called ______
a. kinetic energy
b. surface tension
c. elasticity
d. pressure
Correct Option: b
15. the SI unit of pressure is equal to SI unit of____
a. surface tension
b. stress
c. force
d. strain
Correct Option: b
16. lead is______material
a. elastic
b. ductile
c. hard
d. brittle
Correct Option: b
17. the region in stress-strain curve in which material become permantely changed is called______region
a. fracture
b. plastic
c. elastic
d. yield point
Correct Option: b
18. the unit of modulus of elesticity is__
a. Nm
b. joule
c. pascal
d. no unit
Correct Option: c
19. modulus of elasticity have ________types
a. two
b. four
c. three
d. one
Correct Option: c
20. the ________is equal to change in potential energy
a. surface tension
b. work done
c. kinetic energy
d. elasticity
Correct Option: b
21. surface tension is responsible for ____of liquid droplets
a. size
b. weight
c. height
d. shape
Correct Option: d
22. water adhers ____to itself
a. weekly
b. doesn’t adhere
c. minimum
d. strongly
Correct Option: d
23. sphere has __________possible surface area to volume ratio
a. infinite
b. smallest
c. largest
d. strongest
Correct Option: b
24. surface tensionn is cause dby ___in similar molecules
a. cohesion
b. adhesion
c. force
d. attraction
Correct Option: a
25. in cylinders ,the flow of velocity depends upon ______
a. mass
b. force
c. radius
d. length
Correct Option: c
26. the coefficient of viscosity ______with increase in temperature
a. become infinite
b. decrease
c. increase
d. remain same
Correct Option: b
27. SI unit of angular velocity is
a. rad/s
b. Deg/s
c. Rev/s
d. Str/s
Correct Option: a
28. The radial component of linear acceleration is
a. r*b
b. m/s
c. ω^2 r
d. r*a
Correct Option: c
29. SI unit of angular momentum is
a. Nm/C
b. joule second
c. kgm/s
d. Nm/s
Correct Option: b
30. magnitude of angular momentum is ____________when r and P are parallel
a. minimum
b. same
c. zero
d. maximum
Correct Option: c
31. rate of change of angular momentum is equal to:
a. torque
b. acceleration
c. velocity
d. area
Correct Option: a
32. SI unit of moment of inertia is
a. kgm^2
b. kgm^-2
c. N/m
d. joule/sec
Correct Option: a
33. torque is analogue to______
a. acceleration
b. inertia
c. force
d. momentum
Correct Option: c
34. parallel axis theorem is very use ful tool for computing ______________of different bodies about any axis of rotation
a. rotational K.E
b. torque
c. momentum
d. moment of inertia
Correct Option: d
35. rotational inertia of disc about diameter of disc is
a. ¼ MR^2
b. 1/2 MR^2
c. 1/3MR^2
d. 1/6 MR^2
Correct Option: a
36. the disc is symmetrical about its ______
a. height
b. axis
c. center
d. length
Correct Option: c
37. the product of moment of inertia and _____________is equal to angular momentum
a. angular velocity
b. angular displacement
c. angular acceleration
d. momentum
Correct Option: a
38. 1 rad =_____ Degree
a. 57
b. 50
c. 52
d. 51
Correct Option: a
39. the irregular and non-steady fluid flow is called__________flow
a. steady
b. swift
c. terbulant
d. regular
Correct Option: c
40. the fluid at rest is called ____fluid
a. steady
b. terbulant
c. laminar
d. static
Correct Option: d
41. the fluid must be non- _________________and non-rotational during laminar flow:
a. translational
b. rotational
c. vibrational
d. compressible
Correct Option: d
42. the change in K.E is equal to ____
a. torque
b. momentum
c. work done
d. potential energy
Correct Option: c
43. in Bernoulli’s equation , the term P+pgh is called______pressure
a. static
b. dynamic
c. rotational
d. translational
Correct Option: a
44. SI unit of coefficient of viscosity is
a. Ns/m^2
b. Ns/m
c. N/m^2
d. Nm/C
Correct Option: a
45. SI unit of surface tension is
a. N/ms
b. J/s
c. N/m
d. Ns/m
Correct Option: c
46. high carbon steel is______material
a. brittle
b. ductile
c. glassy
d. elastic
Correct Option: a
47. SI unit of strain is
a. Nm/s
b. No unit
c. j/s
d. N/m
Correct Option: b
48. unit of stress is equal to unit of
a. viscosity
b. pressure
c. force
d. surface tension
Correct Option: b
49. bulk modulus is ratio of ____stress snd strain
a. shear
b. tensile
c. young’s
d. volumetric
Correct Option: d
50. viscosity depends on _____of liquid
a. sixe
b. shape
c. geometery
d. nature
Correct Option: d
