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12th Standard English Medium Maths Subject Application of Differential Calculus Book Back 5 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Maths

Time : 01:00:00 Hrs
Total Marks : 25

    5 Marks

    5 x 5 = 25
  1. A camera is accidentally knocked off an edge of a cliff 400 ft high. The camera falls a distance of s =16t2 in t seconds
    What is the average velocity with which the camera falls during the last 2 seconds?

  2. A camera is accidentally knocked off an edge of a cliff 400 ft high. The camera falls a distance of s =16t2 in t seconds

  3. A particle moves along a line according to the law s(t) = 2t3 − 9t2 +12t − 4, where t ≥ 0.
    (i) At what times the particle changes direction?
    (ii) Find the total distance travelled by the particle in the first 4 seconds.
    (iii) Find the particle’s acceleration each time the velocity is zero.

  4. A conical water tank with vertex down of 12 metres height has a radius of 5 metres at the top. If water flows into the tank at a rate 10 cubic m/min, how fast is the depth of the water increases when the water is 8 metres deep?

  5. A ladder 17 metre long is leaning against the wall. The base of the ladder is pulled away from the wall at a rate of 5 m/s. When the base of the ladder is 8 metres from the wall.
    (i) How fast is the top of the ladder moving down the wall?
    (ii) At what rate, the area of the triangle formed by the ladder, wall and the floor is changing?

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