CBSE Class 11 Physics Worksheet Set B Solved

1. Why are springs made of steel and not copper? 

2. Why are the bags and suitcases provided with broad handles? 

3. Define coefficient of viscosity of a liquid. 

4. What do you mean by a streamline flow of liquid? 

5. Why it is dangerous to stand near the edge of the platform when a fast train is crossing it? 

6. A spherical ball contracts in volume by 0.01%, when subjected to uniform normal pressure of 100 atmospheres. Calculate the bulk modulus of the material. ( 1 Atmospheric pressure = 1 x 105 N/m²)

7. A metal plate of area 0.02 m² is lying on a liquid layer of thickness 10^-3 m and coefficient of viscosity 120 poise. Calculate the horizontal force required to move the plate with speed of
0.025 ms^-1.

8. On the basis of stress-strain curve, distinguish between ductile and brittle materials. 

9. Define terminal velocity and find the expression for the terminal velocity in case of a sphere falling through a viscous liquid such as glycerin.

10. State and prove Bernoulli’s theorem. 

11. The cylindrical tube of a spray pump has a cross-section of 8.0 cm², one end of which has 40 fine holes each of diameter 1.0 mm. If the liquid flow inside the tube is 1.5 m/min. What is the speed of ejection of the liquid through the holes?

Please click on below link to download CBSE Class 11 Physics Worksheet Set B Solved