JEE Main 2022 (Online) 30th June Morning Shift | Motion in a Plane Question 42 | Physics

Two projectiles P₁ and P₂ thrown with speed in the ratio $$\sqrt3$$ : $$\sqrt2$$, attain the same height during their motion. If P₂ is thrown at an angle of 60$$^\circ$$ with the horizontal, the angle of projection of P₁ with horizontal will be :

15$$^\circ$$

30$$^\circ$$

45$$^\circ$$

60$$^\circ$$

JEE Main 2022 (Online) 29th June Evening Shift

MCQ (Single Correct Answer)

-1

A person can throw a ball upto a maximum range of 100 m. How high above the ground he can throw the same ball?

25 m

50 m

100 m

200 m

JEE Main 2022 (Online) 27th June Morning Shift

MCQ (Single Correct Answer)

-1

A projectile is launched at an angle '$$\alpha$$' with the horizontal with a velocity 20 ms^$$-$$1. After 10 s, its inclination with horizontal is '$$\beta$$'. The value of tan$$\beta$$ will be : (g = 10 ms^$$-$$2).

tan$$\alpha$$ + 5sec$$\alpha$$

tan$$\alpha$$ $$-$$ 5sec$$\alpha$$

2tan$$\alpha$$ $$-$$ 5sec$$\alpha$$

2tan$$\alpha$$ $$+$$ 5sec$$\alpha$$

JEE Main 2022 (Online) 27th June Morning Shift

MCQ (Single Correct Answer)

-1

A girl standing on road holds her umbrella at 45$$^\circ$$ with the vertical to keep the rain away. If she starts running without umbrella with a speed of 15$$\sqrt2$$ kmh^$$-$$1, the rain drops hit her head vertically. The speed of rain drops with respect to the moving girl is :

30 kmh^$$-$$1

$${{25} \over {\sqrt 2 }}$$ kmh^$$-$$1

$${{30} \over {\sqrt 2 }}$$ kmh^$$-$$1

25 kmh^$$-$$1

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