The minimum and maximum velocities of a projectile are $10 {ms}^{- 1}$ and $20 {ms}^{- 1}$ respectively. The horizontal range and maximum height are respectively $(g = 10 m s^{- 2})$

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

$10 \sqrt{3} m and 10 m$

$10 \sqrt{3} m and 20 m$

$20 \sqrt{3} m and 15 m$

20m and 15m

answer is B.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

ucos $θ$ = 10

and u = 20

$\Rightarrow \cos θ = \frac{1}{2}$

$\Rightarrow θ = 60 °$

$Horizontal range = R = \frac{u^{2} \sin 2 ϕ}{g} = \frac{20^{2} \sin 120^{\circ}}{10} R = 20 \sqrt{3} m Maximum height = H = \frac{u^{2} \sin^{2} ϕ}{2 g} = \frac{20^{2} \times \frac{3}{4}}{2 \times 10 g} H = 15 m$

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

🔥 Start Your JEE/NEET Prep at Just ₹1999 / month - Limited Offer! Check Now!

Get Expert Academic Guidance – Connect with a Counselor Today!