1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
In a double slit experiment, the two slits are 1 mm apart and the screen is placed 1 m away. A monochromatic light of wavelength 500 nm is used. What will be the width of each slit for obtaining ten maxima of double slit within the central maxima of single slit pattern ?
A
0.5 mm
B
0.02 mm
C
0.2 mm
D
0.1 mm
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
A resistance 'R' draws power 'P' when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z'. the power drawn will be
A
$$P\left( {{R \over Z}} \right)$$
B
P
C
$$P{\left( {{R \over Z}} \right)^2}$$
D
$$P\sqrt {{R \over Z}} $$
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
A certain metallic surface is illuminated with monochromatic light of wavelength, $$\lambda .$$ The stopping potential for photo-electric current for this light is 3V0. If the same surface is illuminated with light of wavelength 2 $$\lambda $$, the stopping potential is V0. The threshold wavelength for this surface for photo-electric effect is
A
$${\lambda \over 4}$$
B
$${\lambda \over 6}$$
C
6$$\lambda $$
D
4$$\lambda $$
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider 3rd orbit of He+ (Helium), using non-relativistic approach, the speed of electron in this orbit will be [given K = 9 $$ \times $$ 109 constant, Z = 2 and h (Planck's Constant) = 6.6 $$ \times $$ 10$$-$$34 J s]
A
0.73 $$ \times $$ 106 m/s
B
3.0 $$ \times $$ 108 m/s
C
2.92 $$ \times $$ 106 m/s
D
1.46 $$ \times $$ 106 m/s