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The minimum wavelength of X-rays produced by electrons accelerated by a potential difference of volts is equal to
(a) 
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(b) 
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(c) 
|
(d) 
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In a Young’s double slit experiment, the slit separation is 1 mm and the screen is 1 m from the slit. For a monochromatic light of wavelength 500 nm, the distance of 3rd minima from the central maxima is
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(a) 0.50 mm |
(b) 1.25 mm |
(c) 1.50 mm |
(d) 1.75 mm |
In a Young’s double slit experiment, the source illuminating the slits is changed from blue to violet. The width of the fringes
|
(a) Increases |
(b) Decreases |
(c) Becomes unequal |
(d) Remains constant |
A conductor in the form of a right angle ABC with AB = 3 cm and BC = 4 cm carries a current of 10 A. There is a uniform magnetic field of 5 T perpendicular to the plane of the conductor. The force on the conductor will be
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(a) 1.5 N |
(b) 2.0 N |
(c) 2.5 N |
(d) 3.5 N |
For the study of the helical structure of nucleic acids, the property of electromagnetic radiation generally used is
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(a) Reflection |
(b) Interference |
(c) Diffraction |
(d) Polarization |