Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

121.

A square wire frame of size L is dipped in a liquid. On taking out a membrane is formed. If the surface tension of liquid is T, then force acting on a frame will be

  • 2T L

  • 4T L

  • 8T L

  • 16T L


122.

A 20 cm long capillary tube is dipped in water. The water rises up to 8 cm. If entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be

  • 4 cm

  • 8 cm

  • 10 cm

  • 20 cm


123.

A metal plate of area 103 cm2 rests on a layer of oil 6 mm thick. A tangential force of 10-2 N is applied on it to move it with a constant velocity of 6 cms-1. The coefficient of viscosity of the liquid is

  • 0.1 poise

  • 0.5 poise

  • 0.7 poise

  • 0.9 poise


124.

Sixty four spherical rain drops of equal size are falling vertically through air with a terminal velocity 1.5 ms-1 . If these drops coalesce to form a big spherical drop, then terminal velocity of big drop is

  • 8 ms-1

  • 16 ms-1

  • 24 ms-1

  • 32 ms-1


Advertisement
125.

A cylinder of height 20 m is completely filled with water. The velocity of efflux of water (in ms-1 ) through a hole on the side wall of the cylinder near its bottom, is

  • 10

  • 20

  • 25.5

  • 5


126.

A liquid flows through a pipe of non-uniform cross-section. If A1 and A2 are the cross-sectional areas of the pipe at two points, the ratio of velocities of the liquid at these points will be

  • A1A2

  • A1A2

  • A2A1

  • 1A1A2


127.

A piece of ice is floating in a jar containing water. When the ice melts, then the level of water

  • rises

  • falls

  • remains unchanged

  • rises or falls


128.

Radius of an air bubble at the bottom of the lake is r and it becomes 2 r when the air bubble rises to the top  surface of the lake. If P cm of water be the atmospheric pressure, then the depth ofthe lake is

  • 2 P

  • 8 P

  • 4 P

  • 7 P


Advertisement
129.

A manometer connected to a closed tap reads 4.5 x 105 Pa. When the tap is opened the  reading of the manometer falls to 4 x 105 Pa. Then the velocity of flow of water is

  • 7 ms-1

  • 8 ms-1

  • 9 ms-1

  • 10 ms-1


130.

A beaker of radius 15 cm is filled with a liquid of surface tension 0.75 N/m. Force across an imaginary diameter on the surface of the liquid is

  • 0.075 N

  • 1.5 × 10-2 N

  • 0.225 N

  • 2.25 × 10-2 N


Advertisement