1
JEE Main 2020 (Online) 7th January Evening Slot
MCQ (Single Correct Answer)
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-1
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A box weight 196 N on a spring balance at the north pole. Its weight recorded on the same balance if it is shifted to the equator is close to (Take g = 10 ms–2 at the north pole and the radius of the earth = 6400 km) :
A
194.32 N
B
195.66 N
C
195.32 N
D
194.66 N
2
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
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-0
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A 60 pF capacitor is fully charged by a 20 V supply. It is then disconnected from the supply and is conneced to another uncharged 60 pF capacitor in parallel. The electrostatic energy that is lost in this process by the time the charge is redistributed between them is (in nJ) _____
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3
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
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-0
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The sum of two forces $$\overrightarrow P $$ and $$\overrightarrow Q $$ is $$\overrightarrow R $$ such that $$\left| {\overrightarrow R } \right| = \left| {\overrightarrow P } \right|$$ . The angle $$\theta $$ (in degrees) that the resultant of 2$${\overrightarrow P }$$ and $${\overrightarrow Q }$$ will make with $${\overrightarrow Q }$$ is , ..............
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4
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
+4
-0
Change Language
JEE Main 2020 (Online) 7th January Evening Slot Physics - Rotational Motion Question 120 English Consider a uniform cubical box of side a on a rough floor that is to be moved by applying minimum possible force F at a point b above its centre of mass (see figure). If the coefficient of friction is $$\mu $$ = 0.4, the maximum possible value of 100 × $${b \over a}$$ for box not to topple before moving is .......
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