Home
Class 8
PHYSICS
Why is a small gap left behind the walls...

Why is a small gap left behind the walls while mounting a girder for roofing? Explain.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • HEAT TRANSFER

    ICSE|Exercise THEME ASSIGNMENT (OBJECTIVE TYPE QUESTIONS) (Fill in the blank)|3 Videos

  • HEAT TRANSFER

    ICSE|Exercise THEME ASSIGNMENT (true or false)|3 Videos

  • HEAT TRANSFER

    ICSE|Exercise EXERCISE (OBJECTIVE TYPE QUESTIONS) (Match the columN)|1 Videos

  • FORCE AND PRESSURE

    ICSE|Exercise Picture Study |4 Videos

  • LIGHT ENERGY

    ICSE|Exercise THEME ASSIGNMENT D. Statements given below are incorrect. Write the correct statements.|7 Videos

Similar Questions

Explore conceptually related problems

Why are gaps left in between rails, while laying a railway line? Explain.

Small gaps are left between railway lines because :

Why is the diameter of an iron tyre kept slightly smaller than the wooden wheel on which this tyre is to be mounted? Explain.

Spring fitted doors close by themselves when released. You want to keep the door open for a long time, say for an hour. If you put a half kg stone in front of the open door, it does not help. The sotne slides with the door and the door gets closed. However, if you sandwitch a 20 g of wood in the small gap between the door and the floor, the door stays open. Explain why a much lighter peice of wood is able to keep the door open while the heavy fails.

Read the statement and answer the questions that follow: A flower of brinjal has 520 ovules in its ovary. However, it produces a fruit with only 480 viable seeds. a) Describe the development of a dicot embryoy in a viable seed b) Why certain angiospermic seeds are albuminous while others are exalbuminous? Explain.

Why are iron bridges mounted on steel rollers? Explain.

Why are gaps left between successive rails on a railway track ?

A thin plate AB of large area A is placed symmetrically in a small gap of height h filled with water of viscosity eta_(0) and the plate has a constant velocity v by applying a force F as shown in the figure. If the gap is filled with some other liquid of viscosity 0.75 eta_(0) at what minimum distance (in cm) from top wall should the plate be placed in the gap, so that the plate can again be pulled at the same constant velocity V . by applying the same force F ? (Take h=20 cm )

A small conducting sphere of radius a mounted on an insulated handle and a positive charge q is inserted through a hole in the wall of a hollow conducting sphere of inner radius b and outer radius c. The hollow sphere is supported on an insulating stand and is initially uncharged. The small sphere is placed at the center of the hollow sphere. Neglect any effect of the hole. Which of the following statements will be true for this system?

While watering a distant plant, a gardener partially closes the exit hole of the pipe by putting his finger on it. Explain why this results in the water stream going to a larger distance.