What is the total electric flux coming out from a closed surface enclosing an alpha particle? Given \(e=1.6 \times 10^{-19} C\)

The de Broglie wavelength of an electron, a proton, and an alpha particle are represented by \(\lambda_e, \lambda_p, \lambda_\alpha\) respectively. If kinetic energy of electron, proton and alpha particle is same, then which of the following is correct.

Which of the following statements are correct ?
(A) Electrostatic field lines form closed loops.
(B) In an electric dipole, the direction from charge to q is the direction of the dipole.
(C) Water molecule is an example of polar molecule.
(D) The electric field due to a uniformly charged thin shell is zero at some points inside the shell.
(E) Electrostatic force is conservative in nature.
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Which of the following statements are correct?
(A) In an ac circuit containing only resistance, power consumption is \( I^2 R \).
(B) In an LCR circuit, there is resonance at zero phase difference between \( X_C \) and \( X_L \) and the power consumption is \( I(\omega X_C + \omega X_L)^{1/2} \).
(C) In an LCR circuit, at resonance, impedance is minimum.
(D) In an LCR circuit, there is resonance at zero phase difference between \( X_C \) and \( X_L \) and the power consumption is zero.
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The light of wavelength 600 mm is coming from a star. What is the limit of resolution of a telescope whose objective has a diameter of 2.54 m ?

At equilibrium condition, the rate of generation of electron-hole pairs in Ge crystal

In a half wave rectifier, the frequency of the output is :

Which of the following is an incorrect statement?

Which of the following are autosomal recessive trait/ disorder?
(A) Thalassemia
(B) Haemophilia
(C) Sickle cell anaemia
(D) Phenylketonuria
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Answer the question on the basis of passage given below :
All transition elements display typical metallic properties like high melting point, boiling point, tensile strength, high malleability and ductility, luster, etc. Their metallic character increases down the group and elements of \(4 d\) and 5d series exhibit higher metallic characters. They show variable oxidation states and forms a number of coloured compounds due to the presence of unpaired electrons which shows d-d transitions and makes them paramagnetic.
The two strongest oxidising agents among the oxides will be :
A. \(MoO _3\)
B. \(CrO _3\)
C. \(Mn _2 O _7\)
D. \(WO _3\)
E. \(VO _2\)
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What is the symbol of technetium element ?

The transition metals generally form complex compounds due to
(A) Variable oxidation states
(B) High ionic charges
(C) Smaller size of metal ion
(D) Metallic conductivity
(E) Availability of d-orbitals
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In a game of 100 points, A can give B 20 points and C 28 points. How many points can B give C?