Two slits in Young's experiment have widths in the ratio 1 : 25. The ratio of intensity at the maxima and minima in the interference pattern, $${{{I_{max}}} \over {{I_{min}}}}$$ is
A
$${{49} \over {121}}$$
B
$${4 \over 9}$$
C
$${9 \over 4}$$
D
$${{121} \over {49}}$$
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
A series R-C circuit is connected to an alternating voltage source. Consider two situations :
(a) When capacitor is air filled.
(b) When capacitor is mica filled.
Current through resistor is $$I$$ and voltage across capacitor is $$V$$ then
A
$${i_a} > {i_b}$$
B
$${V_a} = {V_b}$$
C
$${V_a} < {V_b}$$
D
$${V_a} > {V_b}$$
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
An electron moves on a straight line path XY as shown. The abcd is a coil adjacent to the path of electron. What will be the direction of current, if any, induced in the coil ?
A
The current will reverse its direction as the electron goes past the coil
B
No current induced
C
abcd
D
adcb
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
A beam of light consisting of red, green and blue colours is incifent on a right angled prism. The refractive index of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47 respectively.
The prism will
A
not separate the three colours at all
B
separate the red colour part from the green and blue colours
C
separate the blue colour part from the red and green colours