11.1 Light Travels Along a Straight Line

Front

In the illustration where Rajeev looks at a candle through a straight pipe (a) and a bent pipe (b), what observation best supports the idea that light travels in straight lines?

Back

Light is only visible through the straight pipe

Front

During a science project, Pratik and Rajeev are exploring how a lighthouse beam and a train headlamp both form visible beams in air. They want to test how a shiny spoon changes the direction of such a beam. Which setup would best help them observe this effect?

Back

Shine the torch at the spoon and observe the reflected spot

Front

Where will the image of a candle appear relative to a plane mirror if the candle is placed 15 cm in front of the mirror?

Back

15 cm behind the mirror

Front

During a science experiment, Abhinav raises his left hand before a plane mirror. What will the image appear to do, and why?

Back

Raise right hand due to lateral inversion

Front

What distinguishes the real image of the bright spot on the paper from the virtual image of faces in the mirror?

Back

Real can be captured on a screen

Front

During a science experiment, Sandeep and Bandhana are observing a candle placed in front of a concave mirror. As they move the candle closer to the mirror, what change in the screen image do they most likely observe?

Back

Image may vanish from screen becoming virtual

Front

Mohit holds a convex lens over a sheet in sunlight and slowly moves the lens until a small bright spot appears. What property of the convex lens explains this result?

Back

It bends rays inward to a single point

Front

During a science experiment, Palak and Vaishnavi set up a glass prism to observe how white sunlight can be split into a spectrum of colors. Which setup best demonstrates that white sunlight is a mixture of seven colours?

Back

A glass prism splitting a narrow beam of sunlight

Front

How does light travel under normal conditions?

Back

Along straight lines through uniform media

Front

What is a virtual image?

Back

An image that cannot be formed on a screen