Three Dimensional Geometry MCQ CBSE Maths 12 Science Answers in English to enable students to get Answers in a narrative video format for the specific question.

Expert Teacher provides Three Dimensional Geometry MCQ CBSE Maths 12 Science Answers through Video Answers in English language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Three Dimensional Geometry not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Answer in a narrative video format.

** Question:**

** Answer Video in** **English****:**

**Question 1** : Find the equation of the plane with intercept 3 on the y-axis and parallel to ZOX plane. (View Answer Video)

**Question 2** : Find the intercepts cut off by the plane 2x + y - z = 5. (View Answer Video)

**Question 3** : If a line has direction ratios 2, -1, -2, then what are its direction cosines? (View Answer Video)

**Question 4** : Find the equation of the plane passing through the line of intersection of the planes and which is perpendicular to the plane . (View Answer Video)

**Question 5** : Find the distance of the point (2, 12, 5) from the point of intersection of the lines and the plane (View Answer Video)

**Question 1** : Which of the following functions are strictly decreasing on (View Answer Video)

**Question 2** : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is _____________. (View Answer Video)

**Question 3** : The points on the curve , where the normal to the curve makes equal intercepts with the axes are, (View Answer Video)

**Question 4** : The rate of change of the area of a circle with respect to its radius r at r=6cm is: (View Answer Video)

**Question 5** : The line y = x + 1 is a tangent to the curve at the point: (View Answer Video)

**Question 1** : Using integration, find the area of the region bounded by the curves: y = |x + 1| + 1, x = -3, x = 3, y = 0. (View Answer Video)

**Question 2** : Find the area of the region bounded by the curve and the line x = 3. (View Answer Video)

**Question 3** : Using the method of integration, find the area of the region bounded by the lines: 5x - 2y -10 = 0, x + y - 9 = 0 and 2x - 5y - 4 = 0. (View Answer Video)

**Question 4** : Find the area bounded by the curve and the line x = 4y - 2. (View Answer Video)

**Question 5** : Find the area of the smaller region bounded by the ellipse and the straight line 8x + 3y = 12. (View Answer Video)

**Question 1** : A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20, 16, 18, 20, 17, 16, 19 and 20 years. One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded. What is the probability of the random variable X? Find the mean. (View Answer Video)

**Question 2** : A die is rolled. If E= (1, 3, 5), F(2, 3) and G= {2, 3, 4, 5}, find (a) . (View Answer Video)

**Question 3** : Bag I contains 3 red and 4 black balls and Bag II contains 4 red and 5 black balls. Two balls are transferred at random from Bag I to Bag II and then a ball is drawn from Bag II. The ball so drawn is found to be red in colour. Find the probability that the transferred balls were both black. (View Answer Video)

**Question 4** : A bag contains (2n+1) coins. It is known that (n-1) of these coins have a head on both sides, whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is , determine the value of n. (View Answer Video)

**Question 5** : In a group of 30 scientists workings on an experiment, 20 never commit error in their work and are reporting results elaborately. Two scientists are selected at random from the group. Find the probability distribution of the number of selected scientists who never commit error in work and reporting. Also find the mean of the distribution. What values are described in this question? (View Answer Video)