1. If x=at+bt2, where x is the distance travelled by the body in kilometer while t the time in seconds then the

units of b are :

a)km/s b)km.s c)km/s22 d)km.s2

2. Dimensions of 1

µɛ , are ….

a) LT-1 b) L-1 T c) L-2 T2 d) L2 T-2

3. A force F is given by F=at+bt2, where t is time then dimensions of a and b are

a) MLT 3 & ML2T 4 b)MLT 3 & MLT 4

c)MLT 1 & ML d) MLT 4 & MLT 1

4. The dimensions of physical quantity X in the equation Force = 𝑋

𝐷𝑒𝑛𝑠𝑖𝑡𝑦 is given by

a) ML4 T 2 b) M2 L-2 T 1 c) M2 L-2 T 2 d) ML-2 T-1

5. In C.G.S. system the magnitude of the force is 100 dynes. In another system where the fundamental

physical quantities are kilogram, metre and minute, the magnitude of the force is .

a) 0.036 b) 0.36 c) 3.6 d) 36

6. The number of significant figures in 0.007 is

a) 1 b) 2 c) 3 d) 4

7. The length, breadth and thickness of a block are measured as 125.5 cm, 5.0 cm and 0.32 cm respectively.

Which one of the following measurements is most accurate

a) Length b) Breadth c) Thickness d) Height

8. The mass of a box is 2.3 kg. Two marbles of masses 2.15 g and 12.39 g are added to it. The total mass

of the box to the correct number of significant figures is

a) 2.340 kg b) 2.3145 kg. c) 2.3 kg d) 2.31 kg

9. The length of a rectangular sheet is 1.5 cm and breadth is 1.203 cm. The area of the face of rectangular

sheet to the correct no. of significant figures is :

a) 1.8045 b) 1.804 c) 1.805 d) 1.8

10. The resistance R =V/I where V=100 5 and I= 100.2. then total error in R is

a) 5% b) 7% c) 5.2% d)5/2%

11. If there is a positive error of 50% in the measurement of velocity of a body, then the error in the

measurement of kinetic energy is

a) 25% b) 50% c) 100% d) 125%

12. Number of base SI units is

a) 4 b) 7 c) 3 d) 5

13. The unit of Planck's constant is

a) Joule b) Joule/s c) Joule/m d) Joule- s

14. The physical quantities not having same dimensions are

a) Speed and (0 0 )1 / 2 b) Torque and work

c) Momentum and Planck's constant d) Stress and Young's modulus

15. Which of the following quantities is dimensionless

a) Gravitational constant b) Planck's constant c) Power of a convex lens d) N.o.T

16. Which of the two have same dimensions

a) Force and strain b) Force and stress

c) Angular velocity and frequency d) Energy and strain

17. The dimensions of pressure is equal to

a) Force per unit volume b) Energy per unit volume c) Force d)

Energy

18. The dimensional formula for impulse is

a) MLT 2 b) MLT 1 c) ML2T 1 d) M 2LT 1

19. Light year is a unit of

a) Time b) mass c) Distance d) Energy

20. The percentage errors in the measurement of mass and speed are 2% and 3% respectively. How much will

be the maximum error in kinetic energy

a) 11% b) 8% c) 5% d) 1%

21. What is the number of significant figures in 0.310×103

a) 2 b) 3 c) 4 d) 6

22. Error in the measurement of radius of a sphere is 1%. The error in the calculated value of its volume is

a) 1% b) 3% c) 5% d) 7%

23. The mean time period of second's pendulum is 2.00s and mean absolute error on the time period is 0.05s.

To express maximum estimate of error, the time period should be written as

(a) (2.00 0.01) s b) (2.00 +0.025) s c) (2.00 0.05) s d) (2.00 0.10) s

24. the universe is made up of ...............

a) matter only b) radiation only c) matter& radiation d) vacuum

25. At present state, there are .............. fundamental forces in nature.

a) six b) four c) two d) five

26. How much times is the strong nuclear force stronger then weak nuclear force ?

a) 1013 b) 102 c) 10–13 d) 10–2

27. How much times is the electromagnetic force stronger then Gravitational force

a) 1013 b) 10–13 c) 1036 d) 10–36

28. Which of the following unit is not of length ?

a) light year b) fermi c)oA d) Becquerel

29. Which unit of physical quantity remains same for all unit system

a) meter b) second c) ampere d) kilogram

30. What is the ratio of 10 micron to 1 nenometer ?

a) 104 b) 103 c) 1016 d) 1015

31. 1 Mev = ............... ev

a) 107 b) 104 c) 105 d) 10633

32. Wave length of light radiation 0.000015 m = ...............

a) 15 micron b) 1.5 micron c) 150 micron d) 0.15 micron

33. The percentage error in the distance 100 5 cm is ...

a) 5 % b) 6% c) 8 % d) 20 %

34. Dimensional formula for power is ...............

a) M2 L-2 T-3 b) M1 L2 T-2 c) M1 L3 T-1 d) L2 T-2

The dimensional formula of plank’s constant is ...............

a) M3 L2 T-1 b) M L2 T-1 c) M2 LT-1 d) M L2 T -3

35. Write dimensional formula of coefficient of viscosity

a) M L2 T-1 b) M-1 LT c) M L-1 T-1 d) M LT-1

36. Density of substance in CGS system is 3.125 gm / cm3 what is its magnitude is SI system ?

a) 0.3125 b) 3.125 c) 31.25 d) 3125

37. A gram is:

a) 10−6 kg b)10−3 kg c) 103kg d). 106 kg

38. Candela is the unit of ……

a) electric intensity b) luminous intensity c) electric current d) temperature

39. the laser is studies in ………

a) atomic physics b)thermodynamics c) optics d). acoustics

40. the study about of production of sound and its properties are studies in ……

a) optics b)Acoustics c)particle physics d).mechanics

41. Nuclear fusion and fission are studies in ………..

a) Atomic physics b)Nuclear physics c)thermal physics d)optics

42. A student measures the time period of simple pendulum with 10 observation and the error is x , if he takes

100 observation then error becomes

a) 10x b)x/100 c)x/10 d)x

43. A force F is applied on body of mass m , if error in F is 10% and in m is 5% then error in acceleration is

………

a)15% b)2% c)1% d)5%

44. the unit of Force in F.P.S system is

a)Newton b)Dyne c)Erg d)Pound

45. the dimension of Area, volume and density are respectively

a) M0 L2 T0, M0 L3 T0, ML-3 T-0 b) M0 L-2 T-1, ML-2 T-1, ML-2 T-1

c) M0 L-2 T0, M0 L-2 T-1, M0 L-2 T-1 d) N.O.T

46. ____________ is refered as universal time

a)time taken by earth to rotate round own axis b) time taken by earth to orbit the sun

c)time taken by moon to orbit the sun d)Pound taken by space craft orbit the earth

47. the working of atomic clock is basied on the radiation emitted by -------------

a)Sodium b)Krypton c)Platinum Iridium d)cesium