AP EAPCET 2021 - 19th August Evening Shift

Light of wavelength \(300 \mathrm{~nm}\) in medium \(A\) enters into medium \(B\) through a plane surface. If the frequency of light is \(5 \times 10^{14} \mathrm{~Hz}\) and the ratio of speed in medium \(A\) to that in medium \(B\) is $$4 ...

A sphere of mass m is attached to a spring of
spring constant k and is held in unstretched
position over an inclined plane as shown in
the figure. After letting the sphere go, find
the maximum length by which the spring
extends, given the s...

A girl of mass M stands on the rim of a
frictionless merry-go-round of radius R and
rotational inertia I, that is not moving. She
throws a rock of mass m horizontally in a
direction that is tangent to the outer edge of
the merry-go-round. T...

A block of mass \(\mathrm{l} \mathrm{kg}\) is fastened to a spring of spring constant of \(100 ~\mathrm{Nm}^{-1}\). The block is pulled to a distance \(x=10 \mathrm{~cm}\) from its equilibrium position \((x=0 \mathrm{~cm})\) on a frictionle...

The scale of a spring balance which can measure from 0 to \(15 \mathrm{~kg}\) is \(0.25 \mathrm{~m}\) long. If a body suspended from this balance oscillates with a time period \(\frac{2 \pi}{5} \mathrm{~s}\), neglecting the mass of the spri...

The speed of ripples \((v)\) on water surface depends on surface tension \((\sigma)\), density \((\rho)\) and wavelength \((\lambda)\). Then, the square of speed \((v)\) is proportional to

In Young’s double slit experiment, the
separation between the slits is halved and the
distance between the screen is doubled. The
fringe width is

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What is the shape of the graph between
speed and kinetic energy of a body?

A quarter horse power motor runs at a speed
of 600 rpm. Assuming 60% efficiency, the
work done by the motor in one rotation is