A person using a lens as a simple microscope sees an:
- AInverted virtual image
- BInverted real magnified image
- CUpright virtual image
- DUpright real magnified image
A person using a lens as a simple microscope sees an:
Explanation:
A simple microscope is just a convex lens with object lying between optical centre and focus of the lens.
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In Young's double slit experiment, if the two slits are illuminated with separate sources, no interference pattern is observed because
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(a) There will be no constant phase difference between the two waves |
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(b) The wavelengths are not equal |
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(c) The amplitudes are not equal |
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(d) None of the above |
Magnification of an optical instrument is expressed in:
Two coherent sources of intensities, I1 and I2 produce an interference pattern. The maximum intensity in the interference pattern will be
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(a) I1 + I2 |
(b) |
(c) (I1 + I2)2 |
(d) |
Electromotive force is the force, which is able to maintain a constant
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(a) Current |
(b) Resistance |
(c) Power |
(d) Potential difference |
Two identical induction coils each of inductance L joined in series are placed very close to each other such that the winding direction of one is exactly opposite to that of the other, what is the net inductance
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(a) L2 |
(b) 2L |
(c) L/2 |
(d) Zero |
Light of wavelength 589.3 nm is incident normally on the slit of width 0.1 mm. What will be the angular width of the central diffraction maximum at a distance of 1 m from the slit
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(a) 0.68° |
(b) 1.02° |
(c) 0.34° |
(d) None of these |