A person can see clearly object only when they lie between 50 cm and 400 cm from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use, will be :
From which one of the following is the percentage of reflected amount of radiation highest?
Consider the following statements :
Which of the following types of vegetation is characterized by the above?
Which one of the following is the mode of heat tansfer in which warm material is transported so as to displace a cooler material?
Which one of the following is the amount of heat given up when 20g of steam at 100°C is condensed and cooled to 20°C?
A sonometer wire having a length of 50 cm is vibrating in the fundamental mode with a frequency of 100 Hz. Which of the following is the type of propagating wave and its speed?