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A lot consists of 144 ball pens of which 20 are defective and others are good. Nuri will buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that (i) She will buy it (ii) She will not buy it.
06
Oct
A lot consists of 144 ball pens of which 20 are defective and others are good. Nuri will buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that (i) She will buy it (ii) She will not buy it. A die is thrown [...]
A cubical block of glass of refractive index n1 is in contact with the surface of water of refractive index n2. A beam of light is incident on vertical face of the block (see figure).
06
Oct
A cubical block of glass of refractive index n1 is in contact with the surface of water of refractive index n2. A beam of light is incident on vertical face of the block (see figure). A cubical block of glass of refractive index n1 is in contact with the surface of water of refractive index [...]
Suppose you drop a die at random on the rectangular region shown in fig. What is the probability that it will land inside the circle with diameter 1 m?
06
Oct
Suppose you drop a die at random on the rectangular region shown in fig. What is the probability that it will land inside the circle with diameter 1 m? Suppose you drop a die at random on the rectangular region shown in fig. What is the probability that it will land inside the circle with [...]
What is the length of the image of the rod in mirror, according to the observer in air? (refractive index of the liquid is m)
06
Oct
What is the length of the image of the rod in mirror, according to the observer in air? (refractive index of the liquid is m) according to the observer in air? (refractive index of the liquid is m) What is the length of the image of the rod in mirror October 6, 2020 Category: Uncategorised [...]
A child has a die whose six faces show the letters as given below : A B C D E A The die is thrown once. What is the probability of getting i) A ? ii) D ?
06
Oct
A child has a die whose six faces show the letters as given below : A B C D E A The die is thrown once. What is the probability of getting i) A ? ii) D ? A child has a die whose six faces show the letters as given below : A B [...]
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two digit number (ii) a perfect square number (iii) a number divisible by 5.
06
Oct
A box contains 90 discs which are numbered from 1 to 90. If one disc is drawn at random from the box, find the probability that it bears (i) a two digit number (ii) a perfect square number (iii) a number divisible by 5. A box contains 90 discs which are numbered from 1 to [...]
An infinitely long rod lies along the axis of a concave mirror of focal length f. The near end of the rod is at distance u > f from the mirror. Its image will have a length
06
Oct
An infinitely long rod lies along the axis of a concave mirror of focal length f. The near end of the rod is at distance u > f from the mirror. Its image will have a length An infinitely long rod lies along the axis of a concave mirror of focal length f. The near [...]
Shown plane mirror is lying in y-z plane. A particle P has velocity u = 5i + 6j at t = 0 and acceleration a = 2tj. Velocity of its image at t = 2 s relative to it is
06
Oct
Shown plane mirror is lying in y-z plane. A particle P has velocity u = 5i + 6j at t = 0 and acceleration a = 2tj. Velocity of its image at t = 2 s relative to it is Shown plane mirror is lying in y-z plane. A particle P has velocity u = [...]
A lot of 20 bulbs contain 4 defective ones. One bulb is selected at random from the lot. What is the probability that this bulb is defective? Suppose the bulb selected in the previous case is not defective and is not replaced. Now one bulb is selected at random from the rest. What is the probability that this bulb is not defective?
06
Oct
A lot of 20 bulbs contain 4 defective ones. One bulb is selected at random from the lot. What is the probability that this bulb is defective? Suppose the bulb selected in the previous case is not defective and is not replaced. Now one bulb is selected at random from the rest. What is the [...]
A ray of light is incident normally on the first refracting face of the prism of refracting angle A. The ray of light comes out at grazing emergence. If one half of the prism is knocked off,
06
Oct
A ray of light is incident normally on the first refracting face of the prism of refracting angle A. The ray of light comes out at grazing emergence. If one half of the prism is knocked off, A ray of light is incident normally on the first refracting face of the prism of refracting angle [...]