focal length f = -15 cm Distance of object u = -30 cm 1/ v = 1/f +1/u substituting these values in the lens equation we get, 1/v =1/-15 +1/-30 1/v =-3/30 v = -10cm Hence, the distance of the object from the lens is 10 cm and the negative sign signifies a virtual image.
The following table shows the monthly rainfall in a city for the first six months of the year:
If cos θ = 3/5, find the value of sin 2θ:
Find the volume of a frustum of a cone with a height of 9 cm, the radius of the upper base as 4 cm, and the radius of the lower base as 6 cm. (Use π = ...
A rectangular park is 120 m long and 80 m wide. A path of uniform width is constructed inside the park. If the area of the path is 3600 m², find the wi...
A circle has a radius of 15 cm, and a chord subtends a central angle of 60° at the center. Find the area of the segment formed by the chord.
A car travels from city A to city B at a speed of 60 miles per hour and returns to city A at a speed of 40 miles per hour. If the total round trip takes...
A vessel is completely filled with milk. If 48% of the milk is replaced with water then only 130 ml of milk will be left in the vessel. What is the tota...
A factory produces three types of products, X, Y, and Z. The average production of product X over 5 days is 120 units per day. The average production of...
Find the equation of the line passing through the points P(2, 3) and Q(4, 7).
The following table shows the marks obtained by five students in three subjects:
