Wrok Sheet For Chapter No.1

MCQs

1.                   1: Base quantities are

a)      5                                            b)   6                                 c)  7                                d)   8

2: The prefix mili is equal to

a)      10¹                                        b)   10^-3                            c)   10^-6                           d)   10^-9

3: Mass of earth is

a)      6×10²⁴Kg                             b)    6×10²⁷g                    c)   4×10²⁶Kg                 d)  a and   b

4: Least count of meter rule is

a)      1mm                                    b) 0.1mm                        c) 0.1cm                        d) 0.01mm

5: If the pitch of screw gauge is 1mm and the number of divisions on circular scale is 50. What is the least count of screw gauge?

a)      0.1mm                                 b)   0.01mm                    c) 0.001mm                 d) 0.02mm

6: What is the least count of vernier scale?

a)      0.01mm                              b) 0.1mm                        c) 0.001cm                    d) 1mm

7: In the number 0.124 how many significant figures are there.

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

8: In which of the following numbers zero is not the significant digit.

a)      1.110                                  b) 0.111                            c)  1.101                        d)  1.1100

9: The unit of current is

a)      A                                         b) kg                                   c)  m                              d) s

10: The unit of force is

a)              Kg                                       b) N                                    c) A                               d) Nm                     

1. The basic quantity is:

 (a) Mass                (b) Volume                  (c) Torque                   (d) Momentum

2. The number of base units SI is:

 (a) 3                       (b) 6                              (c) 7                              (d) 9

 3. One Cubic meter is equal to:

(a) 100 liters         (b) 1000 liters              (c) 10 liters                  (d) 106 liters

4. The Study of internal structure of the Earth is:

 (a) Atomic Physics (b) Geo Physics         (c) Sound                    (d) Heat

5. Amount of a substance in terms of numbers is measured in:

(a) Gram                   (b) Kilogram              (c) Newton                 (d) Mole

6. Which is not a derived unit:

 (a) Pascal                (b) Kilogram               (c) Newton                 (d) Watt

7. The number if base units in SI is:

 (a) 3                         (b) 6                            (c) 7                              (d) 9

 8. Which is the smallest quantity?

(a) 0.01g                  (b) 2 mg                     (c) 100                          (d) 5000 ng

 9. A measuring cylinder is used to measure:

 (a) Mass                 (b) Area                      (c) Volume                  (d) Level of liquid

Short Questions:

1.        Define the two main streams of science.
2.        What are prefixes? Give examples.
3.        What is least count of meter rule?
4.        What is vernier caliper?
5.       Define least count of vernier caliper.
6.       What is a digital stopwatch?
7.       What is Science?
8.       What is the difference between base quantities and drive quantities?
9.       What is vernier calipars?
10.       Find the least count of screw gauge.
11.       What is physical balance?