- ACoulomb’s force.
- BNuclear force.
- CVander waal’s force.
- DGravitational force.
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The minimum wavelength of photon is 5000 Å, its energy will be
|
(a) 2.5 eV |
(b) 50 V |
(c) 5.48 eV |
(d) 7.48 eV |
Resistance of a voltameter is 2Ω, it is connected in series to a battery of 10 V through a resistance of 3Ω. In a certain time mass deposited on cathode is 1 gm. Now the voltameter and the 3Ω resistance are connected in parallel with the battery. Increase in the deposited mass on cathode in the same time will be
|
(a) 0 |
(b) 1.5 gm |
(c) 2.5 gm |
(d) 2 gm |
In a moving coil galvanometer, the deflection of the coil θ is related to the electrical current i by the relation
|
(a) i ∝ tanθ |
(b) i ∝ θ |
(c) i ∝ |
(d) i ∝ |
The image which can not be taken on the screen is called:
Direction of the first secondary maximum in the Fraunhofer diffraction pattern at a single slit is given by (a is the width of the slit)
|
(a) asinθ = |
(b) acosθ = |
(c) asinθ = |
(d) asinθ = |