1
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In a Young's double slit experiment, the ratio of the slit's width is 4 : 1. The ratio of the intensity of maxima to minima, close to the central fringe on the screen, will be :
A
25 : 9
B
4 : 1
C
$${\left( {\sqrt 3 + 1} \right)^4}:16$$
D
9 : 1
2
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct figure that shows, schematically, the wave pattern produced by superposition of two waves of frequencies 9 Hz and 11 Hz, is :
A
JEE Main 2019 (Online) 10th April Evening Slot Physics - Waves Question 95 English Option 1
B
JEE Main 2019 (Online) 10th April Evening Slot Physics - Waves Question 95 English Option 2
C
JEE Main 2019 (Online) 10th April Evening Slot Physics - Waves Question 95 English Option 3
D
JEE Main 2019 (Online) 10th April Evening Slot Physics - Waves Question 95 English Option 4
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
In an experiment, brass and steel wires of length 1 m each with areas of cross section 1mm2 are used. The wires are connected in series and one end of the combined wire is connected to a rigid support and other end is subjected to elongation. The stress required to produce a net elongation of 0.2 mm is, [Given, the Young's Modulus for steel and brass are, respectively, 120 × 109 N/m2 and 60 × 109 N/m2]
A
8.0 × 106 N/m2
B
1.2 × 106 N/m2
C
0.2 × 106 N/m2
D
1.8 × 106 N/m2
4
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
A submarine experiences a pressure of 5.05 × 106 Pa at a depth of d1 in a sea. When it goes further to a depth of d2, it experiences a pressure of 8.08 × 106 Pa. Then d2 –d1 is approximately (density of water = 103 kg/m3 and acceleration due to gravity = 10 ms–2 ) :
A
600 m
B
400 m
C
300 m
D
500 m
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