Competishun Header

Report Issue

JEE MAIN_2019
_S2_100419
Question
Given below in the left column are different modes of communication using the kinds of waves given in the right column. A. Optical Fibre P. Ultrasound Communication B. Radar Q. Infrared Light C. Sonar R. Microwaves D. Mobile Phones S. Radio Waves From the options given below, find the most appropriate match between entries in the left and the right column.
Select the correct option:
A
A-Q, B-S, C-P, D-R
B
A-Q, B-S, C-R, D-P
C
A-S, B-Q, C-R, D-P
D
A-R, B-P, C-S, D-Q
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Solution Image
Question Tags
JEE Main
Physics
Hard
Start Preparing for JEE with Competishun
Filters 0
JEE Main
JEE Advance
Easy
Medium
Hard
Showing 18 questions
QJEE Advance 20092009
Let $f: R \rightarrow R$ be a continuous function which satisfies $f(x)=\int_0^x f(t) d t$. Then the value of $...
JEE AdvanceMathematicsEasy
View Solution
QJEE Advance 20092009
If $I_n=\int_{-\pi}^\pi \frac{\sin n x}{\left(1+\pi^x\right) \sin x} d x, n=0,1,2, \ldots$, then
JEE AdvanceMathematicsEasy
View Solution
QJEE Advance 20092009
An ellipse intersects the hyperbola $2 x^2-2 y^2=1$ orthogonally. The eccentricity of the ellipse is reciprocal of that of the...
JEE AdvanceMathematicsEasy
View Solution
QJEE Advance 20092009
For function $f(x)=x \cos \frac{1}{x}, x \geq 1$,
JEE AdvanceMathematicsEasy
View Solution
QJEE Advance 20092009
The tangent PT and the normal PN to the parabola $y^2=4 a x$ at a point $P$ on it meet...
JEE AdvanceMathematicsEasy
View Solution
QJEE Advance 20112011
Steel wire of lenght ' L ' at $40^{\circ} \mathrm{C}$ is suspended from the ceiling and then a mass '...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20092009
If the sum of first $n$ terms of an A.P. is $\mathrm{cn}^2$, then the sum of squares of these $n$...
JEE AdvanceMathematicsEasy
View Solution
QJEE Advance2007
Two wires each carrying a steady current I are shown in four configurations in Column I. Some of the resulting...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20112011
Four solid spheres each of diameter $\sqrt{5} \mathrm{~cm}$ and mass 0.5 kg are placed with their centers at the corners...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20112011
A boy is pushing a ring of mass 2 kg and radius 0.5 m with a stick as shown in...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20112011
A dense collection of equal number of electrons and positive ions is called neutral plasma. Certain solids containing fixed positive...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20112011
A dense collection of equal number of electrons and positive ions is called neutral plasma. Certain solids containing fixed positive...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20112011
An electron and a proton are moving on straight parallel paths with same velocity. They enter a semiinfinite region of...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20112011
A composite block is made of slabs $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ and E of different thermal conductivities (given in terms...
JEE AdvancePhysicsEasy
View Solution
QJEE Advance 20092009
A line with positive direction cosines passes through the point $\mathrm{P}(2,-1,2)$ and makes equal angles with the coordinate axes. The...
JEE AdvanceMathematicsEasy
View Solution