AP EAMCET · PHYSICS · Motion In Two Dimensions
A man standing on a road has to hold his umbrella at \(30^{\circ}\) with the vertical to keep the rain away. He throws the umbrella and starts running at \(10 \mathrm{~km} / \mathrm{h}\). He finds that raindrops are hitting his head vertically. The actual speed of raindrops is :
- A \(20 \mathrm{~km} / \mathrm{h}\)
- B \(10 \sqrt{3} \mathrm{~km} / \mathrm{h}\)
- C \(20 \sqrt{3} \mathrm{~km} / \mathrm{h}\)
- D \(10 \mathrm{~km} / \mathrm{h}\)
Answer & Solution
Correct Answer
(A) \(20 \mathrm{~km} / \mathrm{h}\)
Step-by-step Solution
Detailed explanation
When the man is at rest with respect to the ground, the rain comes to him at an angle \(30^{\circ}\) with the vertical. This is the direction of the velocity of raindrops with respect to the ground. Here, \(\overrightarrow{\mathbf{v}}_{r, g}=\) velocity of the rain with respect…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- The velocity of an object moving in a straight line path is given as a function of time by \(v=6 t-3 t^2\), where \(v\) is in \(\mathrm{ms}^{-1}, t\) is in \(\mathrm{s}\). The average velocity of the object between, \(t=0\) and \(t=2 \mathrm{~s}\) isAP EAMCET 2019 Medium
- Two vectors \(\overrightarrow{\mathrm{a}}\) and \(\overrightarrow{\mathrm{b}}\) are at an angle of \(60^{\circ}\) with each other. Their resultant makes an angle of \(45^{\circ}\) with \(\overrightarrow{\mathrm{a}}\). If \(|\vec{b}|=2\) units, then \(|\vec{a}|\) isAP EAMCET 2023 Easy
- For television broadcasting the frequency employed is normally in range,AP EAMCET 2020 Easy
- A straight wire carrying current \(i\) is turned into a circular loop. If the magnitude of magnetic moment associated with it in MKS units is \(M\), the length of wire will beAP EAMCET 2020 Hard
- An open air pipe of length \(80 \mathrm{~cm}\) has the second harmonic frequency equal to the fundamental frequency of a closed organ air pipe. The length of the closed pipe isAP EAMCET 2022 Medium
- Infinite number of masses each of are placed along a straight line at the distances of , from a point on the same line. If is the universal gravitational constant, then the magnitude of gravitational field intensity at isAP EAMCET 2021 Medium
More PYQs from AP EAMCET
- \(\frac{1+\tanh \frac{x}{2}}{1-\tanh \frac{x}{2}}\) is equal toAP EAMCET 2008 Medium
- Magnetic field at a distance of r from z axis is \(\mathrm{B}_0 r t \hat{k}\) present in the region. ' \(\mathrm{B}_0\) ', is constant and ' t ' is time. The magnitude of induced electric field at a distance of \(r\) from z -axis isAP EAMCET 2024 Medium
- The equation of the circle of radius 5 and touching the co-ordinate axes in third quadrant isAP EAMCET 2002 Easy
- A ball is projected upwards from a height \(h\) above the surface of the earth with velocity \(v\). The time at which the ball strikes the ground isAP EAMCET 2020 Medium
- The combined equation of the direct common tangents of the circles \(x^2+y^2-2 x-2 y-2=0\) and \(x^2+y^2+4 x+6 y+12=0\), isAP EAMCET 2017 Medium
- Pure silicon at 300 K has equal electron and hole concentration of \(1.5 \times 10^{16} \mathrm{~m}^{-3}\). If the hole concentration increases to \(3 \times 10^{22} \mathrm{~m}^{-3}\), then electron concentration in the silicon isAP EAMCET 2024 Easy