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JEE Main 2020 (Online) 7th January Evening Slot
Numerical
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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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2
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
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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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3
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
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-0
Out of Syllabus
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The balancing length for a cell is 560 cm in a potentiometer experiment. When an external resistance of 10 $$\Omega $$ is connected in parallel to the cell, the balancing length changes by 60 cm. If the internal resistance of the ceil is $${N \over {10}}$$ $$\Omega $$ , where N is an integer then value of N is .............
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4
JEE Main 2020 (Online) 7th January Evening Slot
Numerical
+4
-0
Change Language
M grams of steam at 100oC is mixed with 200 g of ice at its melting point in a thermally insulated container. If it produced liquid water at 40oC [heat of vaporization of water is 540 cal/g and heat of fusion of ice is 80 cal/g] the value of M is ____
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