1. Optical fibres are of:

2. A body mass 100 gm is suspended from a spring of force constant 50 N/M . The
maximum acceleration produced in the spring is:

3. Multimode step index fibre has a core of relatively larger diameter such is :

4. Keeping a view the Earth’s surface , the value of g on the earth is :

5. A uniform plank of weight 20 N is 200 cm long and rests on a support that is 60 cm
from one end. At what distance from that end must on 80 N weight be placed in order
to balance the plank ?

6. Multimode graded index fibre core has diameter of:

7. The time period of a second’s found to be2 √ 6 . The acceleration due to gravity on
the surface of moon is :

8. How many phone calls can be carried by single mode step index fibre:

9. Single mode step index fibre has a very thin core of about diameter :

10. A body falling freely under the action of gravity has :