Explanation:
They travel at different speed in air depending on their frequency. At constant as the speed will be same irrespective of frequency. Also frequency is source dependent and doesn't controls speed.
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The far point of a myopia eye is at 40 cm. For removing this defect, the power of lens required will be
|
(a) 40 D |
(b) – 4 D |
(c) – 2.5 D |
(d) 0.25 D |
Assertion : According to classical theory, the proposed path of an electron in Rutherford atom model will be parabolic.
Reason : According to electromagnetic theory an accelerated particle continuously emits radiation.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If assertion is false but reason is true. |
The example for non-ohmic resistance is
|
(a) Copper wire |
(b) Carbon resistance |
(c) Diode |
(d) Tungston wire |
A conducting rod of length 2l is rotating with constant angular speed w about its perpendicular bisector. A uniform magnetic field 
exists parallel to the axis of rotation. The e.m.f. induced between two ends of the rod is
|
(a) Bω |
(b) |
(c) |
(d) Zero |
A truth table is given below. Which of the following has this type of truth table
|
A |
0 |
1 |
0 |
1 |
|
B |
0 |
0 |
1 |
1 |
|
y |
1 |
0 |
0 |
0 |
|
(a) XOR gate |
(b) NOR gate |
(c) AND gate |
(d) OR gate |
