R P Manchanda, Dr. Neha Jindal and, Ms. Archita Baruah Bhattacharyya Solutions for Chapter: Gravitation, Exercise 1: ASSESS YOURSELF

Author:R P Manchanda, Dr. Neha Jindal & Ms. Archita Baruah Bhattacharyya

R P Manchanda Science Solutions for Exercise - R P Manchanda, Dr. Neha Jindal and, Ms. Archita Baruah Bhattacharyya Solutions for Chapter: Gravitation, Exercise 1: ASSESS YOURSELF

Attempt the free practice questions on Chapter 10: Gravitation, Exercise 1: ASSESS YOURSELF with hints and solutions to strengthen your understanding. Together with Science Class 9 solutions are prepared by Experienced Embibe Experts.

Questions from R P Manchanda, Dr. Neha Jindal and, Ms. Archita Baruah Bhattacharyya Solutions for Chapter: Gravitation, Exercise 1: ASSESS YOURSELF with Hints & Solutions

EASY
9th CBSE
IMPORTANT

Why do we feel lighter when we swim?

EASY
9th CBSE
IMPORTANT

A hollow plastic ball is taken to the bottom of a trough of water and released there (see adjoining figure).
Question Image
(a) What happens to the ball?
(b) Give reason for this phenomenon.

MEDIUM
9th CBSE
IMPORTANT

A wooden block is kept on a table top. The mass of the wooden block is 5 kg and its dimensions are 40 cm×20 cm×10 cm. Find the pressure exerted by the wooden block on the table top if it is made to lie on the table top with its sides of dimensions (a) 20 cm×10 cm and (b) 40 cm×20 cm.

EASY
9th CBSE
IMPORTANT

State Archimedes' Principle. List its two applications.

EASY
9th CBSE
IMPORTANT

When water is drawn from a well, a bucket feels heavier when it is drawn out of water or in the air than inside water. Why?

MEDIUM
9th CBSE
IMPORTANT

An object is suspended with a string which gets stretched. When the object is completely immersed in water, the extension of string decreases. Explain why it happens.

MEDIUM
9th CBSE
IMPORTANT

Lead has greater density than iron and both are denser than water. Is the buoyant force on a lead object greater than or lesser than or equal to the buoyant force on an iron object of the same volume? Explain your answer giving reason.

MEDIUM
9th CBSE
IMPORTANT

Define relative density of a solid. State its unit. How is it related to its density? Write mathematical expression for relative density. What conclusion do you draw if relative density of a substance is (a) greater than 1, (b) less than 1 and (c) equal to 1?