CUET PG MCA Science Previous Year Questions (PYQs)
Study Stuff for MCA Examinations
Solution
Assertion (A): Copper is used to make electric wires.
Reason (R): Copper has very low electrical resistance.
Options:
(A) Both A and R are true and R is the correct explanation of A.
(B) Both A and R are true but R is NOT the correct explanation of A.
(C) A is true but R is false.
(D) A is false and R is true.
Solution
Copper is widely used in electric wires because it has very low electrical resistance (high conductivity), which allows electric current to flow easily with minimal energy loss.
Thus, the Assertion is true and the Reason is also true, and the Reason correctly explains the Assertion.
Correct Answer: (A) Both A and R are true and R is the correct explanation of A.
Assertion (A): When lightning strikes, the light appears shortly after the sound is heard.
Reason (R): The velocity of light is greater than the velocity of sound.
Options:
(1) A is true but R is false.
(2) Both A and R are true and R is the correct explanation of A.
(3) A is false but R is true.
(4) Both A and R are true but R is not the correct explanation of A.
Solution
In reality, when lightning strikes, we see the light before hearing the thunder because the speed of light is much greater than the speed of sound.
Therefore, the Assertion is false, while the Reason is true.
CUET PG MCA
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CUET PG MCA
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
