Two bodies are projected from ground with same speeds 40 ms ^ -1 … - Vidyadip

MCQ

Two bodies are projected from ground with same speeds $40 ms ^{-1}$ at two different angles with respect to horizontal. The bodies were found to have same range. If one of the body was projected at an angle of $60^{\circ}$, with horizontal then sum of the maximum heights, attained by the two projectiles, is $.......m$. (Given $g =10 ms ^{-2}$ )

A
$78$
B
$77$
✓
$80$
D
$79$

✓

Answer

Correct option: C.

$80$

c

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A wedge of mass $M = 4\,m$ lies on a frictionless plane. A particle of mass $m$ approaches the wedge with speed $v$. There is no friction between the particle and the plane or between the particle and the wedge. The maximum height climbed by the particle on the wedge is given by

The ratio of maximum and minimum magnitudes of the resultant of two vector $\vec a$ and $\vec b$ is $3 : 1$. Now $| \vec a |$ is equal to

A parallel plate capacitor is connected to a battery and a dielectric slab is inserted between the plates, then which quantity increase

The effective acceleration of a body, when thrown upwards with acceleration $a$ will be

What is net force on the small dipole placed inside the capacitor at steady state if the plates are separated by $1\ cm$ ?......$N$

A compass needle oscillates 20 times per minute at a place where the dip is $30^{\circ}$ and 30 times per minute where the dip is $60^{\circ}$. The ratio of total magnetic field due to the earth at two place respectively is $\frac{4}{\sqrt{x}}$. The value of $x$ is $............$.

A wide slab consisting of two media of refractive indices $n_1$ and $n_2$ is placed in air as shown in the figure. A ray of light is incident from medium $n_1$ to $n _2$ at an angle $\theta$, where $\sin \theta$ is slightly larger than $1 / n _1$. Take refractive index of air as $1$ . Which of the following statement($s$) is(are) correct?

$(A)$ The light ray enters air if $n _2= n _1$

$(B)$ The light ray is finally reflected back into the medium of refractive index $n_1$ if $n_2< n _1$

$(C)$ The light ray is finally reflected back into the medium of refractive index $n _1$ if $n _2> n _1$

$(D)$ The light ray is reflected back into the medium of refractive index $n_1$ if $n_2=1$

In a capillary tube experiment, a vertical $20 \,cm$ long capillary tube is dipped in water. The water rises up to a height of $8\,cm$ due to capillary action. If this experiment is conducted in a freely falling elevator, the length of the water column becomes ....... $cm$

A motorcyclist going around a circular track of radius $50\ m$ with a speed of $25\ m/s$ , is at a point $X$. A static siren at $Y$ is emitting sound of frequency $n$. How many times (approximately) in an hour will the motor cyclist hear the sound of actual frequency $Y$ ?

The velocity of end ' $A$ ' of rigid rod placed between two smooth vertical walls moves with velocity ' $u$ ' along vertical direction. Find out the velocity of end ' $B$ ' of that rod, rod always remains in constant with the vertical walls.