Trending ▼   ResFinder  

ICSE Class X Prelims 2021 : Physics (Podar International School, Nashik)

5 pages, 69 questions, 61 questions with responses, 67 total responses,    4    0
Arth Laddha
  
+Fave Message
 Home > arthladdha02 >   F Also featured on: icse School Page

Formatting page ...

Prelim -I, 2020-21 Class: X Duration: 2hrs Subject: Physics Max. Marks: 80 Section I is compulsory. Attempt any four questions from Section II. The intended marks for questions or parts of questions are given in brackets [ ]. SECTION A (40 Marks) Attempt all questions from this Section. Question 1 a) Why can a machine not be 100 % efficient? [2] b) If the power of a motor is 60 KW, at what speed can it raise a load of 14000 N? [2] c) a) Define radioactivity. b) During the emission of beta particle, the __________number remains the same. [2] d) e) A nut is opened by a wrench of length 20 cm. If the least force required is 2 N, find the moment of force needed to loosen the nut. A large number of free electrons are present in metals. Why is there no current in the absence of electric potential across it? [2] [2] Question 2 a) b) c) d) e) What is the relationship between the mechanical advantage and velocity ratio for : a) an ideal machine b) a practical machine On what factors does the position of the Centre of gravity of the body depend? A machine can open a nut by applying a force of 120 N while using the lever handle of length 50 cm. How long handle is required if he wants to open it by applying force of only 40 N a) Name the radiations which are absorbed by greenhouse gases in the earth s atmosphere. b) A radiation X is focused by a particular device on the bulb of a thermometer and mercury in the thermometer shows the rapid increase. Name the radiation X. What is earthling? What is its use? [2] [2] [2] [2] [2] Question 3 a) b) c) What energy changes that take place in the following: a) a photovoltaic cell b) a microphone Define quality of a sound. What does it depend on? Name two factors on which the heat absorbed or given out by a body depends. [2] [2] [2]

Formatting page ...

Top Contributors
to this ResPaper
(answers/comments)


Sree Devi

(23)

Shriya Karlapudi

(22)

Arif Pathan

(8)

Shubham

(6)

Formatting page ...

Formatting page ...

Formatting page ...

 

  Print intermediate debugging step

Show debugging info


 

 

© 2010 - 2021 ResPaper. Terms of ServiceContact Us Advertise with us

 

arthladdha02 chat