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

Find the equivalent resistance between A and B

The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5

Draw a V-I graph for a conductor at two different temperatures. What conclusion do you draw from your graph for the variation of resistance of conductor with temperature?

State the order of resistivity of (i) a metal, (ii) a semiconductor and (iii) an insulator. 

Name a substance of which the resistance remains almost unchanged by the increase in  temperature. 

State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances. 

State how are the two resistors joined with a battery when same current flows in each resistor.

In series combination of resistances ______.

The following diagram shows an object AB and a converging lens L with foci F₁ and F₂. Draw two rays from the object AB and complete the diagram to locate the position of the image CD. Also mark on the diagram the position of eye from where the image can be viewed.

The following diagram shows an object AB and a converging lens L with foci F₁ and F₂ State three characteristics of the image in relation to the object.

A lens forms an erect, magnified, and virtual image of an object. Where is the object placed in relation to the lens?

A lens forms an erect, magnified and virtual image of an object. Draw a ray diagram to show the formation of image.

A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.

What is a magnifying glass?

Draw a neat labelled ray diagram to show the formation of an image by a magnifying glass. State three characteristics of the image.

Where is the object placed with respect to the principal focus of a magnifying glass, so as to see its enlarged image? Where is the image obtained?

Define magnifying power of a simple microscope. How can it be increased?

A magnifying glass forms ______.

Ray diagram for the formation of image by a magnifying glass.