1
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A soap bubble, blown by a mechanical pump at the mouth of a tube, increases in volume, with time, at a constant rate. The graph that correctly depicts the time dependence of pressure inside the bubble is given by :
A
JEE Main 2019 (Online) 12th January Evening Slot Physics - Properties of Matter Question 184 English Option 1
B
JEE Main 2019 (Online) 12th January Evening Slot Physics - Properties of Matter Question 184 English Option 2
C
JEE Main 2019 (Online) 12th January Evening Slot Physics - Properties of Matter Question 184 English Option 3
D
JEE Main 2019 (Online) 12th January Evening Slot Physics - Properties of Matter Question 184 English Option 4
2
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Two particles A, B are moving on two concentric circles of radii R1 and R2 with equal angular speed $$\omega $$. At t = 0, their positions and direction of motion are shown in the figure. :

JEE Main 2019 (Online) 12th January Evening Slot Physics - Rotational Motion Question 141 English

The relative velocity $${\overrightarrow V _A} - {\overrightarrow V _B}$$ at t = $${\pi \over {2\omega }}$$ is given by :
A
$$ - \omega \left( {{R_1} + {R_2}} \right)\,\widehat i$$
B
$$\omega \left( {{R_2} - {R_1}} \right)\,\widehat i$$
C
$$\omega \left( {{R_1} + {R_2}} \right)\,\widehat i$$
D
$$\omega \left( {{R_1} - {R_1}} \right)\,\widehat i$$
3
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In the circuit shown, find C if the effective capacitance of the whole circuit is to be 0.5 $$\mu $$F. All values in the circuit are in $$\mu $$F.

JEE Main 2019 (Online) 12th January Evening Slot Physics - Capacitor Question 101 English
A
$${6 \over 5}\mu F$$
B
$${7 \over 11}\mu F$$
C
4$$\mu $$F
D
$${7 \over 10}\mu F$$
4
JEE Main 2019 (Online) 12th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A paramagnetic material has 1028 atoms/m3. Its magnetic susceptibility at temperature 350 K is 2.8 $$ \times $$ 10–4. Its susceptibility at 300 K is :
A
3.726 $$ \times $$ 10–4
B
2.672 $$ \times $$ 10–4
C
3.672 $$ \times $$ 10–4
D
3.267 $$ \times $$ 10$$-$$4
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