1
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
The straight wire $ A B $ carries a current $ I $. The ends of the wire subtend angles $ \theta_{1} $ and $ \theta_{2} $ at the point $ P $ as shown in figure. The magnetic field at the point $ P $ is

BITSAT 2024 Physics - Moving Charges and Magnetism Question 1 English

A
$ \frac{\mu_{0} I}{4 \pi d}\left(\sin \theta_{1}-\sin \theta_{2}\right) $
B
$ \frac{\mu_{0} I}{4 \pi d}\left(\sin \theta_{1}+\sin \theta_{2}\right) $
C
$ \frac{\mu_{0} I}{4 \pi d}\left(\cos \theta_{1}-\cos \theta_{2}\right) $
D
$ \frac{\mu_{0} I}{4 \pi d}\left(\cos \theta_{1}+\cos \theta_{2}\right) $
2
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
Inside a solenoid of radius 0.5 m , magnetic field is changing at a rate of $ 50 \times 10^{-6} \mathrm{~T} / \mathrm{s} $. Acceleration of an electron placed at a distance of 0.3 m from axis of solenoid will be
A
$ 23 \times 10^{6} \mathrm{~ms}^{-2} $
B
$ 26 \times 10^{6} \mathrm{~m} / \mathrm{s}^{2} $
C
$ 1.3 \times 10^{9} \mathrm{~ms}^{-2} $
D
$ 26 \times 10^{9} \mathrm{~m} / \mathrm{s}^{2} $
3
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
Which of the following transitions of $ \mathrm{He}^{+} $ion will give rise to spectral line which has same wavelength as the spectral line in hydrogen atom?
A
$ n=4 $ to $ n=2 $
B
$ n=6 $ to $ n=5 $
C
$ n=6 $ to $ n=3 $
D
None of these
4
BITSAT 2024
MCQ (Single Correct Answer)
+3
-1
Young's double slit experiment is performed in a medium of refractive index of 1.33 . The maximum intensity is $ I_{0} $. The intensity at a point on the screen, where path difference between the light coming out from slits is $ \frac{\lambda}{4} $, is
A
0
B
$ \frac{I_{0}}{2} $
C
$ \frac{3 I_{0}}{8} $
D
$ \frac{2 I_{0}}{3} $
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