Test: Light - 1 - Class 7 MCQ

We can see an object when it reflects or emits rays of light that enter our eyes.

A common magnifying glass is an example of convex lens of short focal length.

• When you raise your left hand in front of a mirror, your image raises its right hand.
• It's like a magical world where left becomes right and right becomes left in the mirror!
• So, next time you see your mirror image, remember that it's like your twin in a funhouse, playing a mirror game with you.

Concave lens is also known as diverging lens as it diverges the rays of light falling on it.

Shaving mirrors are usually concave mirrors to form virtual, erect and magnified image of face.

When a concave mirror is held facing the Sun, it forms a real image of the Sun. A real image is like a picture that you can see on a screen. 

Concave mirror is used in the headlight of a vehicle as it reflects a parallel beam of light.when the headlight is placed at the focus of the concave mirror it allows the light to spread out to infinity.

When you look at yourself in a mirror, the image you see is actually the same size as you! It's not smaller.

The imaginary line perpendicular to the reflecting surface is called normal.

False. Light travels along a straight line, not a curved line. When light moves, it goes in a straight path, like when you draw a line with a ruler.