Physics-Sound [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 1 - 5 of 6
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Question 1
Question Assertion-Reason▾
Assertion(Ꭺ)
The velocity of sound in air increases due to the presence of moisture in it.
Reason(Ꭱ)
The presence of moisture in air lowers the density of air.
Choices
Choice (4) | Response | |
---|---|---|
a. | Ꭺ is false but Ꭱ is true | |
b. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ | |
c. | Ꭺ is true but Ꭱ is false | |
d. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ |
Question 3
Question Assertion-Reason▾
Assertion(Ꭺ)
Sound can reach from one place to another due to air.
Reason(Ꭱ)
mechanical wave requires a medium for its propagation
Choices
Choice (4) | Response | |
---|---|---|
a. | Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ | |
b. | Both Ꭺ and Ꭱ are false | |
c. | Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ | |
d. | Ꭺ is false but Ꭱ is true |
Question 5
Question MCQ▾
Consider the following statements
I. A flute of smaller length produces waves of lower frequency.
II. Sound travels in rocks in the form of longitudinal elastic waves only.
Which of the statements given above is/are correct?
Choices
Choice (4) | Response | |
---|---|---|
a. | I and II | |
b. | Neither I nor II | |
c. | Only II | |
d. | Only I |