Physics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 12  18 of 285
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Question 12
Question
MCQ▾Consider a planet, which mass is of mass of earth and its radius is twice of earth’s radius. The weight of an object on that planet, which mass is on the surface of earth, is:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 13
Question
MCQ▾A ball dropped from a building of height . If ball describes during its last second of fall, then the height of the building , and the time of fall are:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 14
Question
MCQ▾The distances travelled by a body falling freely from rest in the second and forth seconds respectively are in the ratio:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 15
Question
MCQ▾Potential energy of a particle is , when it is at height from the ground. Then what is the mass of the particle?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 16
Question
MCQ▾When a ball reaches the ground, its velocity is , from a height . What is the value of ?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 17
Question
MCQ▾The kinetic energy in terms of the momentum is given as:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  None of the above 
Question 18
Question
MCQ▾If a freely falling body travels a distance in the last second, equal to the distance travelled by in the first 2 seconds, the approximate time of its travel is:
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
