If the distance between a point source and screen is doubled, then intensity of light on the screen will become
|
(a) Four times |
(b) Double |
(c) Half |
(d) One-fourth |
(d) One-fourth
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If there are n capacitors in parallel connected to V volt source, then the energy stored is equal to
|
(a) CV |
(b) |
(c) |
(d) |
A moving coil galvanometer has a resistance of 50 Ω and gives full scale deflection for 10 mA. How could it be converted into an ammeter with a full scale deflection for 1A
|
(a) 50/99 Ω in series |
(b) 50/99 Ω in parallel |
|
(c) 0.01 Ω in series |
(d) 0.01 Ω in parallel |
In the circuit shown in figure the maximum output voltage V0 is
|
(a) 0 V |
(b) 5 V |
(c) 10 V |
(d) |
The ratio of longest wavelength and the shortest wavelength observed in the five spectral series of emission spectrum of hydrogen is
|
(a) |
(b) |
(c) 25 |
(d) |
In a Young’s double slit experiment, 12 fringes are observed to be formed in a certain segment of the screen when light of wavelength 600 nm is used. If the wavelength of light is changed to 400 nm, number of fringes observed in the same segment of the screen is given by
|
(a) 12 |
(b) 18 |
(c) 24 |
(d) 30 |
A source emits light of wavelength 4700Å, 5400 Å and 6500 Å. The light passes through red glass before being tested by a spectrometer. Which wavelength is seen in the spectrum
|
(a) 6500 Å |
(b) 5400 Å |
(c) 4700 Å |
(d) All the above |
