Physics [NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension]: Questions 1 - 4 of 73
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Question 1
Question MCQ▾
A stone is dropped into water from a bridge 44.1 m above the water. Another stone is thrown vertically downward 1 s later. Both strike the water simultaneously. What was the initial speed of the second stone?
Choices
Choice (4) | Response | |
---|---|---|
a. | 17.15 | |
b. | 16.23 | |
c. | 14.75 | |
d. | 12.25 |
Question 2
Question MCQ▾
In a hydroelectric power plant, more electrical power can be generated of water falls from a greater height because
Choices
Choice (4) | Response | |
---|---|---|
a. | its temperature increases | |
b. | higher amount of potential energy is converted into kinetic energy | |
c. | more water molecules dissociate into ions | |
d. | the electrical content of water increases with height |
Question 3
Question MCQ▾
A particle is projected up with an initial velocity of 80 ft/s. The ball will attain height of 96 ft from the ground after
Choices
Choice (4) | Response | |
---|---|---|
a. | Only at 1.3 s | |
b. | Only at 15.02 s | |
c. | After 1 and 2 s | |
d. | 1.3 and 15.02 s |
Question 4
Question MCQ▾
Two plane mirrors are inclined to each other at an angle of as shown in figure. A ray of light falls on the mirror at angle and after reflection, falls on the other mirror from which it get reflected by angle i. The value of third angle is?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |