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In an LCR circuit, the potential difference between the terminals of the inductor is 60 V,
between the terminals of capacitor is 30 V and that between the terminals of resistor is 40 V.
The supply voltage is

25 V
50 V
100 V
130 V
Additional Questions

Assertion : Microwave have more energy than the radiowaves.
Reason : Energy E = $hc/\\lambda$.
A. Both, Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. Both, Assertion and Reason are true but the Reason is not correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. Both, Assertion and Reason are false.

Answer

If the number of steady revolutions per minute of a conical pendulum is increased from 75 to
80, the difference in the level of bob would be

Answer

If both the mass and radius of the earth decreases by 1%, then

Answer

A Carnot engine, having an efficiency of $\\eta = $\\dfrac{1}{10}$ as heat engine, is used as a refrigerator. If
the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is

Answer

Two thin lenses of focal lengths 20 cm and 25 cm are placed in contact. The effective
power of the combination is

Answer

Light of wavelength $\\lambda$ and photon energy 2 eV falling on a metal surface produces
photoelectrons of maximum velocity v. If $\\lambda$ is decreased by 25% and the maximum velocity is doubled,
the work function of metal (in eV) is

Answer

The de-Broglie wavelength associated with proton changes by 0.25% if its momentum is
changed by $p_0$. The initial momentum was

Answer

A closed cubical box is completely filled with water and is accelerated horizontally towards
right with constant acceleration a. The resultant normal force by the water on the top of the box

Answer

Assertion : The nature of X-ray spectrum is continuous.
Reason : X-rays arise due to jumps of electrons from higher orbit to one of the inner orbit in an atom.
A. Both, Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. Both, Assertion and Reason are true but the Reason is not correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. Both, Assertion and Reason are false.

Answer

The moment of inertia of a sphere of mass M and radius R about an axis passing through its
centre is $\\dfrac{2}{5} MR^2$. The radius of gyration of the sphere about a parallel axis to the above and tangent to the sphere is:

Answer
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