A small rod ABC is put in water making an angle `6^(@)` with vertical. If it is viewed paraxially from above, it will look like bent shaped ABC'. The angle of bending `(/_CBC')` will be in degree is `(n_(w)=(4)/(3))`.

A small wooden rod of length 5mm is fixed at the bottom of the container filled with water (mu_(water)=4/3) . It is making an angle 37^(@) with vertical. If an observer (in air) observes the rod paraxially, and the rod is appearing at an angle (pi)/x radian with vertical then the find the value of x .

A small wooden rod of length 5mm is fixed at the bottom of the container filled with water (mu_(water)=4/3) . It is making an angle 37^(@) with vertical. If an observer (in air) observes the rod paraxially, and the rod is appearing at an angle (pi)/x radian with vertical then the find the value of x .

A triangle ABC is such that 3angleA=4angleB=6angleC . Find the three angles.

A bird is flying up at an angle sin^(-1)(3//5) with the horizontal. A fish in a pond looks at that bird when it is vertically above the fish. The angle at which the bird appears to fly (to the fish) is [mu_(w) = 4//3]

A bird is flying up at an angle sin^(-1)(3//5) with the horizontal. A fish in a pond looks at that bird when it is vertically above the fish. The angle at which the bird appears to fly (to the fish) is [mu_(w) = 4//3]

A uniform rod of length 2a is held with one end resting on a smooth horizontal table making an angle a with the vertical. Show that when the rod is released, its angular velocity when it makes an angle theta with the vertical is given by omega=[(6g(cosalpha-costheta))/((1+3sin^(2)alpha))]

A bird is flying up at angle sin^(-1)(3//5) with the horizontal. A fish in a pond looks at that bird. When it is vertically above the fish. The angle at which the bird appears to fly (to the fish) is [n_(water)=4//3]

ABC is a triangle where a=6, b=3 and cos(A-B)=4/5 Value of angle C is-

A thin glass prism has a refracting angle of 6^(@) . The angle of incidence is very small . What is the deviation produced by the prism , if the prism is kept in water ? [""_(a) n_(g) = 1.5 , "" _(a) n_(w) = 1.33 ]