1
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Two stones are thrown up simultaneously from the edge of a cliff $$240$$ $$m$$ high with initial speed of $$10$$ $$m/s$$ and $$40$$ $$m/s$$ respectively. Which of the following graph best represents the time variation of relative position of the second stone with respect to the first ?

(Assume stones do not rebound after hitting the ground and neglect air resistance, take $$g = 10m/{s^2}$$)

(The figures are schematic and not drawn to scale)
A
JEE Main 2015 (Offline) Physics - Motion in a Straight Line Question 98 English Option 1
B
JEE Main 2015 (Offline) Physics - Motion in a Straight Line Question 98 English Option 2
C
JEE Main 2015 (Offline) Physics - Motion in a Straight Line Question 98 English Option 3
D
JEE Main 2015 (Offline) Physics - Motion in a Straight Line Question 98 English Option 4
2
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2015 (Offline) Physics - Current Electricity Question 307 English
In the circuit shown, the current in the $$1\Omega $$ resistor is :
A
$$0.13$$ $$A,$$ from $$Q$$ to $$P$$
B
$$0.13$$ $$A$$, from $$P$$ to $$Q$$
C
$$1.3A$$ from $$P$$ to $$Q$$
D
$$0A$$
3
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Two long current carrying thin wires, both with current $$I,$$ are held by insulating threads of length $$L$$ and are in equilibrium as shown in the figure, with threads making an angle $$'\theta '$$ with the vertical. If wires have mass $$\lambda $$ per unit-length then the value of $$I$$ is :
($$g=$$ $$gravitational$$ $$acceleration$$ )

JEE Main 2015 (Offline) Physics - Magnetic Effect of Current Question 190 English
A
$$2\sqrt {{{\pi gL} \over {{\mu _0}}}\tan \theta } $$
B
$$\sqrt {{{\pi \lambda gL} \over {{\mu _0}}}\tan \theta } $$
C
$$\sin \theta \sqrt {{{\pi \lambda gL} \over {{\mu _0}\,\cos \theta }}} $$
D
$$2\sin \theta \sqrt {{{\pi \lambda gL} \over {{\mu _0}\,\cos \theta }}} $$
4
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
When $$5V$$ potential difference is applied across a wire of length $$0.1$$ $$m,$$ the drift speed of electrons is $$2.5 \times {10^{ - 4}}\,\,m{s^{ - 1}}.$$ If the electron density in the wire is $$8 \times {10^{28}}\,\,{m^{ - 3}},$$ the resistivity of the material is close to :
A
$$1.6 \times {10^{ - 6}}\Omega m$$
B
$$1.6 \times {10^{ - 5}}\Omega m$$
C
$$1.6 \times {10^{ - 8}}\Omega m$$
D
$$1.6 \times {10^{ - 7}}\Omega m$$
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