Question
An object moves towards a convex lens of focal length 20
cm with a velocity of 5 cm/s. When the object is at 30 cm from the lens, find the rate at which the image is moving.Solution
Given:
- Focal length of convex lens, f = +20 cm
- Object distance at a given instant, u = –30 cm (object is in front ⇒ negative in sign convention)
- Object velocity: du/dt = +5 cm/s (since it's moving towards the lens, u is decreasing ⇒ du/dt is positive)
dv/dt = ?, i.e., rate of change of image position. Using lens formula: 1/v – 1/u = 1/f Differentiate both sides with respect to time t :
The image is moving away from the lens at a rate of 20 cm/s.
As per accounting standards, inventory is to be valued at cost or net realizable value. Which of the accounting principle forms the basis of this standa...
Equity Multiplier allows the Investors to see: (In DuPont Analysis)
Which of the following concepts describes the line of authority should flow from top management to bottom?
What is the primary purpose of the money market?
Which one of the following is a second method of Calculation of Maximum Permissible Bank finance recommded by Tandon Committee?
MTG Ltd wants to buyback its shares. What is the maximum limit up to which it is allowed to buy-back its shares in a year?
If the company earned revenue from operations of Rs.18 lakh, what is the working capital turnover ratio of the company?
As per AS- 2 what should be the valuation of inventory from the following information:
Purchase Price = 2000
Trade Discount = 200
C...
Which of the following is NOT a component of the CAMELS rating system used for bank evaluation?
The application of audit procedures to less than 100% of items within a population of audit relevance is:
Relevant for Exams:
