1
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
Change Language
When a rubber ball is taken to a depth of __________m in deep sea, its volume decreases by 0.5%.

(The bulk modulus of rubber = 9.8 $$\times$$ 108 Nm$$-$$2, Density of sea water = 103 kgm$$-$$3, g = 9.8 m/s2)
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2
JEE Main 2021 (Online) 27th August Evening Shift
Numerical
+4
-1
Change Language
Wires W1 and W2 are made of same material having the breaking stress of 1.25 $$\times$$ 109 N/m2. W1 and W2 have cross-sectional area of 8 $$\times$$ 10$$-$$7 m2 and 4 $$\times$$ 10$$-$$7 m2, respectively. Masses of 20 kg and 10 kg hang from them as shown in the figure. The maximum mass that can be placed in the pan without breaking the wires is ____________ kg. (Use g = 10 m/s2)

JEE Main 2021 (Online) 27th August Evening Shift Physics - Properties of Matter Question 122 English
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3
JEE Main 2021 (Online) 26th August Morning Shift
Numerical
+4
-1
Change Language
A soap bubble of radius 3 cm is formed inside the another soap bubble of radius 6 cm. The radius of an equivalent soap bubble which has the same excess pressure as inside the smaller bubble with respect to the atmospheric pressure is ................ cm.
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4
JEE Main 2021 (Online) 27th July Evening Shift
Numerical
+4
-1
Change Language
The water is filled upto height of 12 m in a tank having vertical sidewalls. A hole is made in one of the walls at a depth 'h' below the water level. The value of 'h' for which the emerging steam of water strikes the ground at the maximum range is ________ m.
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