-
$\lambda'>\lambda$
-
$\lambda'=\lambda$
-
$\lambda'<\lambda$
- Nothing can be said about the relation of $\lambda$ and $\lambda'.$
$\lambda'>\lambda$
$\lambda'=\lambda$
$\lambda'<\lambda$
$\lambda'<\lambda$
Explanation:

As $\text{v}=\sqrt{\frac{\text{f}}{\mu}}$
A wave pulse travels faster in a thinner string. The wavelength of the transmitted wave is equal to the wavelength of the Incident wave because the frequency remains constant.
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Find the power of the circuit

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(a) 1.5 W |
(b) 2 W |
(c) 1 W |
(d) None of these |
1 Curie is equal to
|
(a) 3 |
(b) 3.7 |
|
(c) 5 |
(d) 3.7 |
Two spherical conductors A and B of radius a and b (b > a) are placed in air concentrically B is given charge + Q coulomb and A is grounded. The equivalent capacitance of these is
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(a) 4π |
(b) 4 π |
(c) 4 π |
(d) 4 π |
The principle of controlled chain reaction is used in
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(c) The core of sun |
(d) Artificial radioactivity |
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When the current in a coil changes from 8 ampere to 2 ampere in 3
second, the e.m.f. induced in the coil is 2 volt. The self inductance of the coil (in millihenry) is
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(a) 1 |
(b) 5 |
(c) 20 |
(d) 10 |
The figure represents the observed intensity of X-rays emitted by an X-ray tube as a function of wavelength. The sharp peaks A and B denote

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(a) Band spectrum |
(b) Continuous spectrum |
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(c) Characteristic radiations |
(d) White radiations |