1
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
A body is thrown vertically upwards. Which one of the following graphs correctly represent the velocity vs time?
A
JEE Main 2017 (Offline) Physics - Motion Question 150 English Option 1
B
JEE Main 2017 (Offline) Physics - Motion Question 150 English Option 2
C
JEE Main 2017 (Offline) Physics - Motion Question 150 English Option 3
D
JEE Main 2017 (Offline) Physics - Motion Question 150 English Option 4
2
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
A body of mass m = 10–2 kg is moving in a medium and experiences a frictional force F = –kv2. Its initial speed is v0 = 10 ms–1. If, after 10 s, its energy is $${1 \over 8}mv_0^2$$, the value of k will be:
A
10-1 kg m-1 s-1
B
10-3 kg m-1
C
10-3 kg s-1
D
10-4 kg m-1
3
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
A time dependent force F = 6t acts on a particle of mass 1 kg. If the particle starts from rest, the work done by the force during the first 1 sec. will be:
A
18 J
B
4.5 J
C
22 J
D
9 J
4
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
The moment of inertia of a uniform cylinder of length $$l$$ and radius R about its perpendicular bisector is $$I$$. What is the ratio $${l \over R}$$ such that the moment of inertia is minimum?
A
$${3 \over {\sqrt 2 }}$$
B
$$\sqrt {{3 \over 2}} $$
C
$${{\sqrt 3 } \over 2}$$
D
1
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