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A particle is projected at an angle of elevation `alpha` and after t second it appears to have an elevation of `beta` as seen from the point of projection. Find the initial velocity of projection
08
Sep
A particle is projected at an angle of elevation `alpha` and after t second it appears to have an elevation of `beta` as seen from the point of projection. Find the initial velocity of projection A particle is projected at an angle of elevation `alpha` and after t second it appears to have an elevation [...]
A hose lying on the ground shoots a stream of water upward at an angle of 60∘ to the horizontal with the velocity of 16 m/s. The height at which the water strikes the wall 8m away is
08
Sep
A hose lying on the ground shoots a stream of water upward at an angle of 60∘ to the horizontal with the velocity of 16 m/s. The height at which the water strikes the wall 8m away is A hose lying on the ground shoots a stream of water upward at an angle of 60∘ [...]
Choose the correct option Two seconds after the projection, a projectile is moving at 30∘ above the horizontal, after one more second it moves horizontally (g=10 m/s 2).
08
Sep
Choose the correct option Two seconds after the projection, a projectile is moving at 30∘ above the horizontal, after one more second it moves horizontally (g=10 m/s 2). a projectile is moving at 30∘ above the horizontal after one more second it moves horizontally (g=10 m/s 2). Choose the correct option Two seconds after the [...]
An aeroplane is flying horizontally with a velocity `720 km/h` at a height of `2000 m`. When it is vertically at a point `A` on the ground, a bomb is released from it. The bomb strikes the ground at point `B`. The distance `AB` is
08
Sep
An aeroplane is flying horizontally with a velocity `720 km/h` at a height of `2000 m`. When it is vertically at a point `A` on the ground, a bomb is released from it. The bomb strikes the ground at point `B`. The distance `AB` is a bomb is released from it. The bomb strikes the [...]
A particle is projected with speed u at angle θ with horizontal. What is the speed when its direction of motion makes an angle θ/2 with the horizontal
08
Sep
A particle is projected with speed u at angle θ with horizontal. What is the speed when its direction of motion makes an angle θ/2 with the horizontal A particle is projected with speed u at angle θ with horizontal. What is the speed when its direction of motion makes an angle θ/2 with the [...]
A projectile is projected and it takes 9s to reach in the horizontal plane through the point of projection. In its path it passes a point P after 4s. The height of P above the horizontal plane is
08
Sep
A projectile is projected and it takes 9s to reach in the horizontal plane through the point of projection. In its path it passes a point P after 4s. The height of P above the horizontal plane is A projectile is projected and it takes 9s to reach in the horizontal plane through the point [...]
An empty spherical flask of diameter 15 cm is placed in water of refractive index 4/3. A parallel ray of light strikes the flask. Where does it get focused, if observed from within the flask?
08
Sep
An empty spherical flask of diameter 15 cm is placed in water of refractive index 4/3. A parallel ray of light strikes the flask. Where does it get focused, if observed from within the flask? An empty spherical flask of diameter 15 cm is placed in water of refractive index 4/3. A parallel ray of [...]
A ball is thrown with speed 40m/s at an angle 30∘ with horizontally from the top of a tower of height 60m. Choose the correct option
08
Sep
A ball is thrown with speed 40m/s at an angle 30∘ with horizontally from the top of a tower of height 60m. Choose the correct option A ball is thrown with speed 40m/s at an angle 30∘ with horizontally from the top of a tower of height 60m. Choose the correct option September 8, 2020 [...]
O is a point object kept on the principal axis of a concave mirror M of radius of curvature 20 cm. P is a prism of angle 1.8 . Light falling on the prism (at small angle of incidence) gets refracted through the prism and then falls on the mirror. Refractive index of the prism is 3/2
08
Sep
O is a point object kept on the principal axis of a concave mirror M of radius of curvature 20 cm. P is a prism of angle 1.8 . Light falling on the prism (at small angle of incidence) gets refracted through the prism and then falls on the mirror. Refractive index of the prism [...]
The base of an isosceles glass prism just submerged in water. The base of the prism is kept in horizontal orientation. A horizontal light ray PQ is incident on the prism and takes a path shown in figure and emerge out of the prism.
08
Sep
The base of an isosceles glass prism just submerged in water. The base of the prism is kept in horizontal orientation. A horizontal light ray PQ is incident on the prism and takes a path shown in figure and emerge out of the prism. 2 cm) with respect to the origin P. The concave mirror [...]