What is the path difference of destructive interference
|
(a) nl |
(b) n(λ + 1) |
(c) |
(d) |
What is the path difference of destructive interference
|
(a) nl |
(b) n(λ + 1) |
(c) |
(d) |
(d)
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A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 cm. The image would be formed at

|
(a) 30 cm left |
(b) Infinity |
(c) 1 cm to the right |
(d) 18 cm to the left |
In a triode amplifier,
kilo ohm and load resistance
kilo ohm. If the input signal voltage is 0.5 volt, then output signal voltage will be
|
(a) 1.25 volt |
(b) 5 volt |
(c) 2.5 volt |
(d) 10 volt |
The particle that possesses half integral spin as
|
(a) Photon |
(b) Pion |
(c) Proton |
(d) K-meson |
A ray of light incidents on a plane mirror at an angle of 30°. The deviation produced in the ray is
| (a) 30° | (b) 60° | (c) 90° | (d) 120° |
A thermoelectric refrigerator works on
|
(a) Joule effect |
(b) Seeback effect |
(c) Peltier effect |
(d) Thermonic emission |
Assertion : A P-N photodiode is made from a semiconductor for which Eg = 2.8 eV. This photo diode will not detect the wavelength of 6000 nm.
Reason : A PN photodiode detect wavelength l if
.
|
(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 the assertion and reason both are false. |