1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
If the earth were to suddenly contract to half of its present radius, what would be the duration of the day?
A
$6$ h
B
$18$ h
C
$24$ h
D
$30$ h
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
The angular momentum of a moving body remains constant, if
A
net external force is applied
B
net pressure is applied
C
net external torque is applied
D
net external torque is not applied
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Suppose the acceleration due to gravity at the earth's surface is $g \text{ m/s}^2$ and at the surface of moon it is $g' \text{ m/s}^2$. An M kg passenger goes from the earth to the moon in a spaceship moving with a constant velocity (Neglect all other objects in the sky). Which curve best represents the weight (net gravitational force) as a function of time?
A
A
B
B
C
C
D
D
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Imagine a new planet having the same density as that of the earth, but it is two times bigger than the earth in size. If the acceleration due to gravity on the surface of the earth is $g$ and that on the surface of the new planet is $g'$, then
A
$g' = \dfrac{g}{4}$
B
$g' = 8g$
C
$g' = 2g$
D
$g' = 4g$