1
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A 1 kg block attached to a spring vibrates with a frequency of 1 Hz on a frictionless horizontal table. Two springs identical to the original spring are attached in parallel to an 8 kg block placed on the same table. So, the frequency of vibration of the 8 kg block is :
A
$${1 \over 4}Hz$$
B
$${1 \over {2\sqrt 2 }}Hz$$
C
$${1 \over 2}Hz$$
D
$$2$$ $$Hz$$
2
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which graph corresponds to an object moving with a constant negative acceleration and a positive velocity ?
A
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion in a Straight Line Question 95 English Option 1
B
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion in a Straight Line Question 95 English Option 2
C
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion in a Straight Line Question 95 English Option 3
D
JEE Main 2017 (Online) 8th April Morning Slot Physics - Motion in a Straight Line Question 95 English Option 4
3
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Time (T), velocity (C) and angular momentum (h) are chosen as fundamentalquantities instead of mass, length and time. In terms of these, the dimensions of mass would be :
A
[M] = [T$$-$$1 C$$-$$2 h]
B
[M] = [T$$-$$1 C2 h]
C
[M] = [T$$-$$1 C$$-$$2 h$$-$$1]
D
[M] = [T C$$-$$2 h]
4
JEE Main 2017 (Online) 8th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If the Earth has no rotational motion, the weight of a person on the equator is W. Determine the speed with which the earth would have to rotate about its axis so that the person at the equator will weigh $${3 \over 4}$$ W. Radius of the Earth is 6400 km and g=10 m/s2.
A
1.1 $$ \times $$ 10−3 rad/s
B
0.83 $$ \times $$ 10−3 rad/s
C
0.63 $$ \times $$ 10−3 rad/s
D
0.28 $$ \times $$ 10−3 rad/s
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