Saleha Pervez, Mansi Garg and, Poonam Singh Solutions for Chapter: Mechanics, Exercise 1: Self Check
Saleha Pervez General Studies Paper 1 Solutions for Exercise - Saleha Pervez, Mansi Garg and, Poonam Singh Solutions for Chapter: Mechanics, Exercise 1: Self Check
Attempt the practice questions on Chapter 1: Mechanics, Exercise 1: Self Check with hints and solutions to strengthen your understanding. General Science solutions are prepared by Experienced Embibe Experts.
Questions from Saleha Pervez, Mansi Garg and, Poonam Singh Solutions for Chapter: Mechanics, Exercise 1: Self Check with Hints & Solutions
Ball bearings are used in bicycles, cars, etc., because _____.
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when:
1. The orbit is geosynchronous
2. The orbit is circular
3. The orbit lies in the place of the earth's equator
4. The orbit is at an altitude of 22236 km
Which of the statement(s) given above is/are correct?
Consider the following statements in respect of a jet engine and a rocket:
1. A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space.
2. A rocket carries its own supply of oxygen in the gas form and fuel.
Which of the statement(s) given above is/are correct?
Consider the following statements:
1. Geostationary satellites are used to reflect TV signals and telecast TV program from one part of the world to another.
2. Polar satellites are used for weather forecasting.
Which of the statement(s) given above is/are correct?
Consider the following statements:
Statement I: When a parachutist jumps from a height, a graph relating displacement and time will be parabolic.
Statement ll: Velocity-time graph of a particle freely falling under gravity is a straight line.
Which of the statement(s) given above is/are correct?
Consider the following statements:
Statement I: If a gymnast standing on a rotating stool with his arms stretched suddenly lowers his arms. His angular velocity increases.
Statement II: A geostationary satellite is at an approximate height of km.
Which of the above statement(s) is/are correct?
Consider the following statements:
1. A force is said to be conservative if the work done by the force on a particle in a round trip is zero.
2. A force is said to be non-conservative if work done by the force on a particle in a round trip is not zero.
3. The gravitational force and the electrostatic force are examples of non-conservative forces.
4. Viscous force and frictional force are examples of conservative forces.
Which of the statement (s) given above is/are correct?
A metal ball and a rubber ball of the same mass are dropped from the same height. After hitting the floor, the rubber ball rises higher than the metal ball, why?
