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A staircase contains three steps each 10 cm high and 20 cm wide figure. What should be the minimum horizontal velocity of a ball rolling off the upper most plane so as to hit directly the lowest plane?
08
Sep
A staircase contains three steps each 10 cm high and 20 cm wide figure. What should be the minimum horizontal velocity of a ball rolling off the upper most plane so as to hit directly the lowest plane? A ball rolls off the top of a staircase with a horizontal velocity u m/s. If the [...]
The refractive indices of the crown glass for blue and red light are 1.51 and 1.49 resp. and those of flint glass are 1.77 and 1.73 respectively. Two isosceles prisms, one of crown glass and other of flint glass are combined to produce dispersion without deviation. If angle of crown glass prism is
08
Sep
The refractive indices of the crown glass for blue and red light are 1.51 and 1.49 resp. and those of flint glass are 1.77 and 1.73 respectively. Two isosceles prisms, one of crown glass and other of flint glass are combined to produce dispersion without deviation. If angle of crown glass prism is one of [...]
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one of crown glass and other of flint glass are combined to produce dispersion without deviation. If angle of crown glass prism is ,
The refractive indices of the crown glass for blue and red light are 1.51 and 1.49 resp. and those of flint glass are 1.77 and 1.73 respectively. Two isosceles prisms ,
A right angles prism (45,90,45) of refractive index n has a plate of refractive index (n1<n) cemented to its diagonal face. The assemble is in air. A ray is incident on AB. a. Calculate the angle of incidence at AB for which the ray strikes the diagonal face at the critical angle.
08
Sep
A right angles prism (45,90,45) of refractive index n has a plate of refractive index (n1<n) cemented to its diagonal face. The assemble is in air. A ray is incident on AB. a. Calculate the angle of incidence at AB for which the ray strikes the diagonal face at the critical angle. 2 cm) with [...]
A ball rolls off the top of a staircase with a horizontal velocity u m/s. If the steps are h metre high and b metre wide, the ball will hit the edge of the nth step, if
08
Sep
A ball rolls off the top of a staircase with a horizontal velocity u m/s. If the steps are h metre high and b metre wide, the ball will hit the edge of the nth step, if A ball rolls off the top of a staircase with a horizontal velocity u m/s. If the steps [...]
From the top of a tower, a ball is dropped and another ball B is thrown horizontally at the same time. Which ball strikes the ground first?
08
Sep
From the top of a tower, a ball is dropped and another ball B is thrown horizontally at the same time. Which ball strikes the ground first? a ball is dropped and another ball B is thrown horizontally at the same time. Which ball strikes the ground first? From the top of a tower September [...]
A body projected horizontally with a speed u from the top of a tower of height h, reaches the ground at a horizontal distance R from the tower. Another body, projected horizontally from the top of a tower of height 4h
08
Sep
A body projected horizontally with a speed u from the top of a tower of height h, reaches the ground at a horizontal distance R from the tower. Another body, projected horizontally from the top of a tower of height 4h A body projected horizontally with a speed u from the top of a tower [...]
A ball is rolled off the edge of a horizontal table at a speed of 4 m/second. It hits the ground after 0.8 second. Which statement given below is true
08
Sep
A ball is rolled off the edge of a horizontal table at a speed of 4 m/second. It hits the ground after 0.8 second. Which statement given below is true A ball is rolled off the edge of a horizontal table at a speed of 4 m/second. It hits the ground after 0.8 second. Which [...]
At the height 320 m, an aeroplane is moving with 100 m/s. A bomb is dropped from it so as to hit a target. At what horizontal distance from the target should the bomb be dropped
08
Sep
At the height 320 m, an aeroplane is moving with 100 m/s. A bomb is dropped from it so as to hit a target. At what horizontal distance from the target should the bomb be dropped an aeroplane is moving with 100 m/s. A bomb is dropped from it so as to hit a target. [...]
A ray of light strikes a plane mirror at an angle of incidence 45 as shown in figure. After reflection, the ray passes through a prism of refractive index 1.5 whose apex angle is 4. Through what angle
08
Sep
A ray of light strikes a plane mirror at an angle of incidence 45 as shown in figure. After reflection, the ray passes through a prism of refractive index 1.5 whose apex angle is 4. Through what angle A ray of light strikes a plane mirror at an angle of incidence 45 as shown in [...]
Two mirrors M1 and M2 are arranged as shown in figure. An object O is at the position (-10 cm , 2 cm) with respect to the origin P. The concave mirror M1 has radius of curvature 30 cm. A plane mirror
08
Sep
Two mirrors M1 and M2 are arranged as shown in figure. An object O is at the position (-10 cm , 2 cm) with respect to the origin P. The concave mirror M1 has radius of curvature 30 cm. A plane mirror 2 cm) with respect to the origin P. The concave mirror M1 has [...]