The radius of curvature of the path of a charged particle in a uniform magnetic field is directly proportional to the

An electron moving with velocity of \(5.4 \times 10^6\) m/sec. What is the de-Broglie wavelength associated with them (\(h = 6.63 \times 10^{-34}\) J/s)

When an electron of hydrogen atom is raised from the ground state to an excited state.

The angle of dip at equator is

In Young's Double Slit experiment, the intensities of two coherent monochromatic waves are I and 4I. The ratio of intensity at maxima to minima will be :

From the following, choose the element for impurity atoms with which pure silicon should be doped to make it a p-type semiconductor:

Consider the following statements
(A) Corpuscular model predicted that if the ray of light bends towards the normal after refraction then the speed of light would be greater in the second medium
(B) In optical fibre, the refractive index of the core is kept higher than cladding.
(C) Diffraction due to clouds is efficient in equal measures for all wavelengths
(D) Light travels faster in glass than in air.
(E) When light reflects from an air glass plate interface, the reflected wave suffers a phase change of \( \pi \).
Choose the correct answer from the options given below :

A charge of \( 5 \mu C \) moves with a speed of \( 2 \times 10^6 \text{ m/s} \) along the positive \( y \)-axis. A magnetic field \( \vec{B} \) of strength \( (2\hat{i} + \hat{k})\text{T} \) exists in space. The magnetic force acting on the charge is :

Question based on following passage :
Adsorption is the process of attracting and retaining the adsorbate molecules on the surface of adsorbent. It is of two types i.e. Physisrption and chemisorption. To increase the rate of reaction, the substance called 'catalyst' is added. Promotors enhance the activity of catalyst while poison decrease the catalyst activity. Solutions may be true solution, suspension and colloids. Colloids are heterogenous but quite stable. On the basis of nature of interaction, colloids may be Lyophilic or Lyophobic. On the basis of type of dispersed phase particles, there may be multimolecular colloids, macromlecular colloids and associated colloids. The congulation of colloids may be done by boiling, dialysis or by mixing oppositely charged sols.
The substances which behave as normal electrolyte at low concentration but become colloids at higher concentration, are known as :

General solution of the differential equation \(\frac{d y}{d x}=e^{\frac{5^2}{5}}+x y\) is :

Mucosa-associated lymphoid tissue (MALT) is located within the lining of -

If \(f(x)=\left\{\begin{array}{ll}\frac{x^2-9}{x-3}, & x \neq 3 \\ 5, & x=3\end{array}\right.\) then \(f(x):\)

Match List-I with List-II

List- I	List- II
(A) For a series LC circuit	(I) Currents in L and C are 180° out of phase
(B) For a parallel LC circuit	(II) Power Factor=0
(C) For a purely capacitive circuit	(III) Voltage across L and C are 180° out of phase
(D) For a series LCR circuit at resonance	(IV) Reactance is zero

Choose the correct answer from the options given below: