1
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

In a young's double slit arrangement fringes are produced using light of wavelength 4000 $$\mathop A\limits^o $$. One slit is covered by a thin plate of glass of refractive index 1.4 and the other with another glass plate of same thickness but of refractive index 1.7. By doing so the central bright shifts to original sixth fringe from centre. Thickness of glass plate is ................. .

A
2 $$\mu$$m
B
8 $$\mu$$m
C
11 $$\mu$$m
D
16 $$\mu$$m
2
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

An electric current I enters and leaves a uniform circular wire of radius r through diametrically opposite points. A charged particle q moves along the axis of circular wire passes through its centre at speed v. The magnetic force on the particle when it passes through the centre has a magnitude.

A
$${{qv{\mu _0}I} \over {2\pi r}}$$
B
$$qv{{{\mu _0}I} \over {\pi r}}$$
C
$${{qv{\mu _0}I} \over r}$$
D
0
3
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

An achromatic convergent doublet of two lenses in contact has a power of +5 D. The power of converging lens is +6 D. The ratio of the dispersive power of the convergent and divergent lenses is

A
3 : 7
B
2 : 3
C
1 : 5
D
5 : 3
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12