KVPY (Kishore Vaigyanik Protsahan Yojana) StreamSA (Class 11) Physics: Questions 115  118 of 253
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Question number: 115
» Laws of Motion » Law of Conservation of Linear Momentum
Question
A stationary U^{238 }nucleus emits on αparticle (_{2}He^{4}) with velocity and kinetic energy 3.8 MeV. What is the velocity of the residual nucleus?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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 
