(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Draw a ray diagram to show how a converging lens can form an image of the sun. Hence give a reason for the term ‘burning glass’ for a converging lens used in this manner.

A lens forms an inverted image of an object. What is the nature of the image real or virtual?

An object is placed at a distance of more than 40 cm from a convex lens of focal length 20 cm. The image formed is real, inverted and ______.

An object is placed at a distance 2f from a convex lens of focal length f. The size of the image formed is ______ that of the object.

An object is placed at a distance 5 cm from a convex lens of focal length 10 cm. The image formed is virtual, upright and _____.

For the object placed between the optical centre and focus of a convex lens, the image is ______.

A body falls freely under gravity from rest. Name the kind of energy it will possess at the point from where it falls.

A ball of mass m is thrown vertically up with an initial velocity so as to reach a height h. The correct statement is:

What is the mechanical advantage of a single movable pulley in the ideal case?

Name a machine which is used to multiply force.

Following Fig shows piece of cardboard of uniform thickness cut into different shapes. Draw two lines to indicate the position of centre of gravity G.

Following Fig shows piece of cardboard of uniform thickness cut into different shapes. Draw two lines to indicate the position of centre of gravity G.

Following Fig shows piece of cardboard of uniform thickness cut into different shapes. Draw two lines to indicate the position of centre of gravity G.

Following Fig shows piece of cardboard of uniform thickness cut into different shapes. Draw two lines to indicate the position of centre of gravity G.