A spherical mirror is obtained as shown in the figure from a hollow glass sphere.
A spherical mirror is obtained as shown in the figure from a hollow glass sphere. If an object is positioned... View Article
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The mass density of a spherical galaxy K varies as K/r over a large distance ‘r’ from its centre. In that region, a small star is in a circular orbit of radius R. Then the period of revolution, T depends on R as:
a) T2∝R b) T2∝R3 c) T2∝ (1/R3) d) T ∝R Mass of galaxy = \(\begin{array}{l}\int_{0}^{R}\rho dv\end{array} \) = \(\begin{array}{l}\int_{0}^{R}\frac{k}{r}4\pi r^{2}... View Article
The circuit shown below is working as a 8V dc
The circuit shown below is working as a 8V dc regulated voltage source. When 12V is used as input, the... View Article
In a meter bridge experiment S is a standard resistance.
In a meter bridge experiment S is a standard resistance. R is a resistance wire. It is found that balancing... View Article
In a Young’s double slit experiment
In a Young’s double slit experiment 15 fringes are observed on a small portion of the screen when light of... View Article
An electric field [latex]vec{E}=4xhat{i}-(y^{2}+1)hat{j}[/latex] passes through the box shown in figure.
An electric field \(\begin{array}{l}\vec{E}=4x\hat{i}-(y^{2}+1)\hat{j}\end{array} \) passes through the box shown in figure. The flux of the electric field through surface... View Article
Starting at temperature 300 K
Starting at temperature 300 K, one mole of an ideal diatomic gas (ϒ = 1.4) is first compressed adiabatically from... View Article
The current (i) in the network is
The current (i) in the network is a. 0A b. 0.3 A c. 0.2 A d. 0.6 A Since the... View Article
In LC circuit the inductance L = 40mH and C = 100 μF.
In LC circuit the inductance L = 40mH and C = 100 μF. If a voltage V(t) = 10sin(314t) is... View Article
An electron of mass m and magnitude of charge
An electron of mass m and magnitude of charge |e| initially at rest gets accelerated by a constant electric field... View Article
There is a small source of light at some depth below the surface of water
There is a small source of light at some depth below the surface of water (refractive index 4/3) in a... View Article
The energy required to ionise a hydrogen like ion
The energy required to ionise a hydrogen like ion in its ground state is 9 Rydbergs. What is the wavelength... View Article
A uniformly thick wheel with moment of inertia I
A uniformly thick wheel with moment of inertia I and radius R is free to rotate about its center of... View Article
A particle of mass m is projected with a speed u
A particle of mass m is projected with a speed u from the ground at angle is θ = π/3... View Article
A rod of length L has non-uniform linear mass density
A rod of length L has non-uniform linear mass density given by \(\begin{array}{l}\rho (x)=(a+b\frac{x}{L}^{2})\end{array} \), Where a and b are... View Article
Planets A has a mass M and radius R
Planets A has a mass M and radius R. Planet B has the mass and half the radius of planet... View Article
Two steel wires having same length
Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their... View Article
Two gases-Argon
Two gases-Argon (atomic radius 0.07 nm atomic weight 40) and Xenon (atomic radius 0.1 nm atomic weight 140) have the... View Article
A plane electromagnetic wave is propagating along the direction
A plane electromagnetic wave is propagating along the direction \(\begin{array}{l}\frac{\hat{i}+\hat{j}}{\sqrt{2}}\end{array} \) with the polarization along the direction ̂\(\begin{array}{l}\hat{k}\end{array} \).The correct... View Article
A wire of length L
A wire of length L and mass 6 x 10-3 kg/m per unit length is put under tension of 540N.... View Article
