The angle of projection at which the horizontal range and maximum height of a projectile are equal to_____________________?
(A) 36°
(B) 45°
(C) 56°
(D) 76°
A stone is thrown vertically upwards with a vertical velocity of 49 m/sec. It returns to the ground in________________?
(A) 5 sec
(B) 8 sec
(C) 10 sec
(D) 20 sec
If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is__________________?
(A) zero
(B) maximum
(C) minimum
(D) unpredictable
The angle of projection at which the horizontal range and maximum height of a projectile are equal to___________________?
(A) 45°
(B) tan-1 (2)
(C) tan-‘ (4)
(D) tan”1 (1/4)
In a simple harmonic motion, the position of equilibrium is always_________________?
(A) stable
(B) unstable
(C) neutral
(D) none of the above
The maximum displacement of a particle executing S.H.M. corresponds to__________________?
(A) zero potential energy and maximum kinetic energy
(B) zero kinetic energy and maximum potential energy
(C) maximum kinetic energy and maxi-mum potential energy
(D) minimum kinetic energy and minimum potential energy
A simple pendulum of length 1 has an energy E when its amplitude is A. If its amplitude is increased to 2 A, the energy becomes____________________?
(A) E
(B) E/2
(C) 2E
(D) 4E
The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by__________________?
(A) 1:2
(B) 1:1
(C) 2:1
(D) 3:1
Time period and length of a seconds pendulum respectively are_________________?
(A) 1 sec and 99.4 cm
(B) 1 sec and 92.7 cm
(C) 2 sec and 99.4 cm
(D) 2 sec and 92.7 cm