Posts

12

MAXIMUM TIME: 35 minutes MAXIMUM MARKS: 20 marks 1.    What is wavelength? (1) 2.    What is pitch? (1) 3.    What should be the time interval between the originated sound and the reflected sound to heard distinctly? (1) 4.    A ship sends out ultrasound that returns from the seabed and is detected after 3.42 s. If the speed of ultrasound through seawater is 1531 m/s . What is the distance of the seabed from the ship? (3) 5.    Define amplitude, time period and frequency of sound water. (3) 6.    Why do we say that sound waves are longitudinal? (2) 7.    Give three uses of ultrasound. (3) 8.    Sound cannot travel in vacuum. Describe an experiment to demonstrate this. (4) 9.    A child watching Dussehra from a distance sees the effigy of ravana burst into flames and hears the explosion associated with it 2 s...
Post a Comment
Read more

11

Total Marks: 30 Total Time: 40 mins 1.    Define one watt of power. (2 Marks) 2.    Name twy physical quantities whose unit is Joule. (2 Marks) 3.    What is gravitational potential energy? (2 Marks) 4.    What is the commercial unit of energy? Define it. (3 Marks) 5.    Give one example where work done on an object is negative. (3 Marks) 6.    What work is said to be done to increase the velocity of a car from 15 km/h to 30 km/h, if the mass of the car is 1000 kg? (3 Marks) 7.    A body possess potential energy of 460 J whose mass is 20 kg and is raised to a certain height. What is the height when g = 10 m/s 2 . (3 Marks) 8.    Derive the formula for kinetic energy. (4 Marks) 9.    With pendulum as an example the law of conservation of energy. (4 Marks) 10.  ...
Post a Comment
Read more

10

MAXIMUM TIME: 35 MINUTES MAXIMUM MARKS: 20 marks 1.   Give the S.I. unit of G and its value.      1 2.   g=GM/R 2 , what does these symbols denote?      1 3.   When a ball is let free fall from the top of building. What is the acceleration and what its sign?      1 4.   A ball is projected vertically upwards with an initial velocity ‘u goes to a maximum height ‘h’ before touching the ground. What is the value of ‘h’ ?      2 5.   How is the weight of an object related to its mass?      2 6.   The mass of the body on earth is 60kg, what is its weight on the earth and on moon.      2 7.   The mass of earth is 6x10 24  kg and that of the moon is 7.4x 10 22 kg. If the distance between the earth...
Post a Comment
Read more

9

Max Time:30 mins Max Marks:25 1.   Why do passengers tend to fall sideways when the bus takes a sharp u turn?            (2 marks) 2.   Why should a passenger hold on to prevent himself from swaying in a turning bus?            (2 marks) 3.   Why do passengers tend to fall back when it starts suddenly?            (2 marks) 4.   Why do passengers jumping out of a rapidly moving bus fall forward with his face downwards, if he does not run forward?            (2 marks) 5.   Why does a passenger jumping out of a rapidly moving bus fall forward with his face downwards?            (2 marks) 6.   Wh...
Post a Comment
Read more

8

Time: 60 Minutes MM- 35 Two Mark Questions 1.   Define the term displacement. Is it a vector quantity or a scalar quantity? 2.   What is circular motion? Is circular motion an acceleration motion? 3.   Derive mathematically the first equation of motion V=u + at? Three Mark Questions 4.   A boy runs for 20 min. at a uniform speed of 18km/h. At what speed should he run for the next 40 min. so that the average speed comes 24km/hr. 5.   A train accelerated from 10km/hr to 40km/hr in 2 minutes. How much distance does it cover in this period? Assume that the tracks are straight? 6.   A train starts from rest and accelerate uniformly at the rate of 5 m/s 2  for 5 sec. Calculate the velocity of train in 5 sec. 7.   A bullet leaves a rifle with a muzzle velocity of 1042 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 1.680 m. Determ...
Post a Comment
Read more

15

Maximum time- 35 minutes Maximum marks- 25 1.   Name few common practices used for dairy industry.      (4 marks) 2.   Explain different types of fisheries.      (5 marks) 3.   Give any two differences between manure and fertilizers.      (2 marks) 4.   What are the different cropping systems?      (3 marks) 5.   How can weeds be controlled?      (3 marks) 6.   What is the difference between egg-layers and boilers?      (2 marks) 7.   What are manures? How are they classified?      (4 marks) 8.   Name any two Indian cattle.      (2marks)
Post a Comment
Read more

14

Maximum time: 35 minutes Maximum marks: 20 marks 1.    Define Nitrification. (1) 2.    Name four factors which lead to soil formations (2) 3.    What make the quality and type of soils? (2) 4.    How does atmosphere help in climate control? (2) 5.    What is acid rain? Give its harmful effects. (3) 6.    What is greenhouse effect? Why it is named so? (3) 7.    What is the importance of ozone to mankind? (3) 8.    Explain the physical, chemical and biological factors which lead to the formation of soil. (4)
Post a Comment
Read more