KVPY (Kishore Vaigyanik Protsahan Yojana) StreamSA (Class 11) Physics: Questions 116  119 of 253
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Question number: 116
» Properties of Solids & Liquids » Bernoulli's Principle and Its Applications
Question
A liquid of density 0.9 is flowing through horizontal tube of varying crosssectional area. The diameter at point A is 12 cm and diameter at point B is 6 cm in tube. The manometer shows 16 cm pressure between A and B in two limbs. So what is the rate of flow of liquid in the tube?
Choices
Choice (4)  Response  

a.  5562 

b.  5030 

c.  5392 

d.  5782 

Question number: 117
» Gravitation » Gravitational Potential
Question
The gravitational potential difference between a point at the surface of a certain planet and a point 20 m above the surface is 8 J kg^{1}. Assume the gravitational field to be uniform. What is the work done in joule in moving a mass of 4 kg from the surface to a point 5 m above the surface?
Choices
Choice (4)  Response  

a.  0.16 

b.  4.0 

c.  1.5 

d.  8.0 

Question number: 118
» Ray Optics » Lens Maker's Formula and Lens Formula
Appeared in Year: 2015
Question
An optical device is constructed by fixing three identical convex lenses of focal lengths 10 cm each inside a hollow tube at equal spacing of 30 cm each. One end of the device is placed 10 cm away from a point source. How much does the image shift when the device is moved away from the source by another 10 cm?
Choices
Choice (4)  Response  

a.  0 

b.  15 cm 

c.  5 cm 

d.  45 cm 

Question number: 119
» Gravitation » Gravitational Acceleration
Appeared in Year: 2015
Question
A ball is launched from the top of Mt. Everest which is at elevation of 9000 m. The ball moves in circular orbit around earth. Acceleration due to gravity near the earth’s surface is g. The magnitude of the ball’s acceleration while in orbit is
Choices
Choice (4)  Response  

a.  Nearly equal to g 

b.  zero 

c.  much greater than g 

d.  close to 
