Question
The hyper-metropia is a
|
(a) Short-side defect |
(b) Long- side defect |
|
(c) Bad vision due to old age |
(d) None of these |
The hyper-metropia is a
|
(a) Short-side defect |
(b) Long- side defect |
|
(c) Bad vision due to old age |
(d) None of these |
(b) Long- side defect
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An air filled parallel plate capacitor has capacity C. If distance between plates is doubled and it is immersed in a liquid then capacity becomes twice. Dielectric constant of the liquid is
|
(a) 1 |
(b) 2 |
(c) 3 |
(d) 4 |
A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes through the coil. When it is converted to a 10 A ammeter, the shunt resistance is
|
(a) 0.01 W |
(b) 0.05 W |
(c) 2000 W |
(d) 5000 W |
If an interference pattern have maximum and minimum intensities in 36 : 1 ratio then what will be the ratio of amplitudes
|
(a) 5 : 7 |
(b) 7 : 4 |
(c) 4 : 7 |
(d) 7 : 5 |
The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5 Å. The speed with which the star is receding from the earth is
|
(a) 17.29 × 109 m/s |
(b) 4.29 × 107 m/s |
(c) 3.39 × 105 m/s |
(d) 2.29 × 105 m/s |
The intensity of electric field at a point between the plates of a charged capacitor
|
(a) Is directly proportional to the distance between the plates |
|
(b) Is inversely proportional to the distance between the plates |
|
(c) Is inversely proportional to the square of the distance between the plates |
|
(d) Does not depend upon the distance between the plates |
The frequencies of X-rays, g-rays and ultraviolet rays are respectively a, b and c. Then
|
(a) a < b, b > c |
(b) a > b, b > c |
(c) a > b, b < c |
(d) a < b, b < c |
An electron enters a magnetic field whose direction is perpendicular to the velocity of the electron. Then
|
(a) The speed of the electron will increase |
|
(b) The speed of the electron will decrease |
|
(c) The speed of the electron will remain the same |
|
(d) The velocity of the electron will remain the same |