Q15.What are the components of blood?
Q17.What is bisexual flower?
Q18.A simple pendulum takes 32 seconds to complete 20 oscillations .What is the time
period of the pendulum?
Q19.What is a fuse?
Answers
ans 15. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.
ans 17. The flowers which contain both male and female reproductive organs are known as full or bisexual flowers. They will self-pollinate themselves. Examples: Tulip, Sunflower and Lily.
ans 18. The time taken to complete one oscillation is known as the time period of the pendulum. Given: - 20 oscillations taking 32s to complete. Therefore 1.6s is the time period of the pendulum.
ans 19. In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupting the current. It is a sacrificial device; once a fuse has operated it is an open circuit, and must be replaced or rewired, depending on its type.
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