Question Answers

A missing helicopter is reported to have crashed somewhere in the rectangular region shown in fig. What is the probability that it crashed inside the lake shown in the figure? A missing helicopter is reported to have crashed somewhere in the rectangular region shown in fig. What is the probability that it crashed inside the [...]

In a musical chair game, the person playing the music has been advised to stop playing the music at any time within 2 minutes after he starts playing. What is the probability that the music will stop within the first half minute after starting? A die is thrown twice. What is the probability that (i) [...]

Harpreet tosses two different coins simultaneously (say, one is of Rs. 1 and other of Rs. 2). What is the probability that he gets at least one head? Harpreet tosses two different coins simultaneously (say one is of Rs. 1 and other of Rs. 2). What is the probability that he gets at least one [...]

There are 40 students in class X of a school of whom 25 are girls and 15 are boys. The class teacher has to select one student as a class representative. She writes the name of each student on a separate card, the cards being identical. Then she puts cards in a bag and stirs [...]

An object AB is placed parallel and close to the optical axis between focus F and centre of curvature C of a converging mirror of focal length f as shown in figure. Then. An object AB is placed parallel and close to the optical axis between focus F and centre of curvature C of a [...]

Savita and Hamida are friends. What is the probability that both will have a) different birthdays? b) the same birthday (ignoring a leap year). Savita and Hamida are friends. What is the probability that both will have a) different birthdays? b) the same birthday (ignoring a leap year). October 6, 2020 Category: Chapter 15 - [...]

Two players, Sangeeta and Reshma, play a tennis match. It is known that the probability of Sangeeta’s winning the match is 0.62. What is the probability of Reshma’s winning the match? play a tennis match. It is known that the probability of Sangeeta's winning the match is 0.62. What is the probability of Reshma's winning [...]

A glass prism is immersed in a hypothetical liquid. The curves showing the refractive index n as function of wavelength lemda for glass and liquid are as shown in Figs. (a) and (b) A glass prism is immersed in a hypothetical liquid. The curves showing the refractive index n as function of wavelength lemda for [...]

One card is drawn from a well-shuffled deck of 52 cards. Calculate the probability that the card will (i) be an ace. (ii) not be an ace. One card is drawn from a well-shuffled deck of 52 cards. Calculate the probability that the card will (i) be an ace. (ii) not be an ace. October [...]

Consider the rays shown in figure as paraxial. The image of the virtual point object O formed by the lens LL is Consider the rays shown in figure as paraxial. The image of the virtual point object O formed by the lens LL is October 6, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]