KCET 2019

A transparent medium shows relation between \(i\) and \(r\) as shown. If the speed of light in vacuum is \(c\), the Brewster angle for the medium is

A point object is moving uniformly towards the pole of a concave mirror of focal length \(25 \mathrm{~cm}\) along its axis as shown below. The speed of the object is \(1 \mathrm{~ms}^{-1}\). At \(t=0\), the distance of the object from the m...

A particle is moving uniformly along a straight line as shown in the figure. During the motion of the particle from \(A\) to \(B\), the angular momentum of the particle about \(O\)

The conductivity of semiconductor increases with increase in temperature because

For a transistor amplifier, the voltage gain

In the following circuit, what are P and Q?

A piston is performing S.H.M. in the vertical direction with a frequency of \(0.5 \mathrm{~Hz}\). A block of \(10 \mathrm{~kg}\) is placed on the piston. The maximum amplitude of the system such that the block remains in contact with the pi...

If \(P, Q\) and \(R\) are physical quantities having different dimensions, which of the following combinations can never be a meaningful quantity?

If Young's double slit experiment, using monochromatic light of wavelength \(\lambda\), the intensity of light at a point on the screen where path difference is \(\lambda\) is \(K\) units. The intensity of light at a point where path differ...

The equation of a stationary wave is \(y=2 \sin \left(\frac{\pi x}{15}\right) \cos (48 \pi t)\). The distance between a node and its next antinode is