Physics question and answers for November 13, 2023
- Q Refracting angle of the prism op see figure is 30 and is kept in air The angle of incidence of the beam on the face of the prism a 37...
- Q Consider the following statements and choose the incorrect one A ray which is parallel and close to the principal axis of a concave mirror goes through the focus of the...
- Q 1 In the diagram given below X and Y are the end colours of the spectrum of white light The colour of Y represents the White light La a Colour...
- Q An equi convex lens has focal length equal to 20 cm If the lens is cut in two equal halves by a plane perpendicular to the principal axis then the...
- Q In the figure shown consider the first reflection at the plane mirror and second at the convex mirror AB is object R 120cm B H 10cm 10cm 50cm A the...
- Q Light takes 8 minutes 20 second to reach from sun to the earth If the whole universe and atmosphere is hypothetically filled up with a liquid of refractive index 1...
- Q A compound microscope is an instrument which consists of two lenses L and L The lens L called objective forms a real inverted and magnified image of the given object...
- Q A object is placed at Centre of Curvatur e concave mirror which of the following statement is not true in reference to the diagram shown above Image formed is real...
- Q Water has a refractive index of 4 3 At what angle of incidence should a ray be incident on water air interface from water to suffer total internal reflection sin...
- Q A magician during one of his shows makes a lens disappear by immersing it in a liquid of refractive index 1 5 The refractive index of the material of the...
- Q Q 36 A glass slab of thickness 2 5 cm having refractive index 5 3 is kept on an ink spot A transparent beaker of very thin bottom containing water...
- Q An object was placed upright 25 cm in front of a converging lens of focal length 20 cm A concave mirror with a focal length of 15 cm was placed...
- Q 45 An object is placed at a distance of 30 cm from a convex lens the magnification produced is 1 which is real and inverted The focal length 2 of...
- Q When a ray of light passes through a glass prism it suffers two refractions During these refractions the ray bends a Away from the base in both cases t Towards...
- Q The power of a combination of two lenses in contact is 1 0 D If the focal length of one of the lenses of the combination is 20 0 cm...
- Q 7 A person has near point at 60 cm The focal length of spectacles lenses to read at 22 cm having glasses separated 2 cm from the eyes is Xov...
- Q a There is a point object placed in front of a pla mirror If the mirror is displaced by 10cm away f the object find the distance by which image...
- Q A converging lens shown in the sketch has focal length of 5 cm An object 1 cm tall is placed 4 cm from the lens The image of the object...
- Q A beam of diameter d is incident on a glass hemisphere as shown If the radius of curvature of the hemisphere is very large in comparison to d then the...
- Q A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm If a plane mirror were put perpendicular to the principal...
- Q 21 An optical element is shown in surfaces are 10 cm and 20 cm Calculate distance between two spherical surfaces so that image of the object coincides with the object...
- Q Focal lengths of objective and eyepiece of Gallilian telescope have magnitudes of 100 cm and 5 cm respectively In normal adjustment the distance between the objective and eyepiece is 2...
- Q A convex lens is kept between the object and screen kept 40 cm Now a glass block of 6 cm thickness is placed in contact with the light source To...
- Q A ray of light travelling from medium A to medium B is shown in figure Refractive index of medium B with respect to medium A is O 3 2 O...
- Q A small object is placed 10 cm infront of a plane mirror If you stand behind the object 30 cm from the mirror and look at its image the distance...
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