Surface Areas and Volumes Important Questions A conical tent is 10 m high and the radius of its base is 24 m. Find the slant height of the tent. If the cost of 1 m2 canvas is ₹ 70, find the cost of canvas required to make the tent. A man uses a piece of […]
Triangles Important Questions Line l is the bisector of an angle ∠A and B is any point on l. BP and BQ are perpendiculars from B to the arms of ∠ A. Show that: ΔAPB ≅ ΔAQB BP = BQ or B is equidistant from the armsof ∠A. In ΔABC, ∠A – ∠B = 33° […]
Lines and Angles Important Questions The diagonals of the rectangle ABCD intersect at O. If ∠COD = 78°, then ∠OAB is: 35o 51o 70o 110o If AB = x + 3, BC = 2x and AC = 4x – 5, then for what value of ‘x’, B lies on AC? 2 3 5 8 In the given Figure , […]
Gravitation Important Questions An object is thrown vertically upward and rises to height of 10 m. Calculate the (i) the velocity by which the object was thrown upward and (ii) the time taken by object to reach the highest point. The mass of earth is 6.4 x 1024 kg and that of the moon is […]
Probability – Important Questions A box contains 90 discs, numbered from 1 to 90. If 1 disc is drawn at random from the box, the probability that it bears a prime number less than 23, is : 7/90 10/90 4/45 9/89 What is the sum of the probabilities of all the elementary events of an […]
Probability – Previous Years Questions If two different dice are rolled together, the probability of getting an even number on both dice is 1/36 1/2 1/6 1/4 [CBSE 2014] [1 Mark] A number is selected at random from the numbers 1 to 30. The probability that it is a prime number is 2/3 1/6 1/3 […]
Dear studentsCBSE has organized a Student training on Digital Safety and Online Well-being, in association with Facebook to discuss growing internet access and usage. Online abuse, bullying, misinformation, fake news, internet addiction etc are increasingly becoming important issues to deal with. Several people are dealing with anxiety, stress due to physical distancing and loss of […]
Constructions – Previous Years Questions Draw a circle of radius 5 cm. Construct a pair of tangents to it so that they are inclined at 60°. Measure the lengths of the two tangents. [CBSE 2017] [3 Marks] Construct a triangle with sides 5 cm, 6 cm and 7 cm. Now construct another triangle whose sides […]
Circles – Previous Years Questions In the given figure PQ is a tangent at a point C to a circle with centre O. If AB is a diameter and ∠CAB = 30°. Find ∠PCA. [CBSE 2016] [1 Mark] Two concentric circles of radii a and b (a > b) are given. Find the length of […]
Some Applications of Trigonometry – Previous Years Questions A ladder, leaning against a wall, makes an angle of 60° with the horizontal. If the foot of the ladder is 2.5 m away from the wall, find the length of the ladder. [CBSE 2016] [1 Mark] If the shadow of a vertical pole at a particular […]