Light class 10

Light behaves like both a particle and a ______.

• Mass
• Wave
• Current

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

What does reflection mean?

• bending light
• bouncing light

Tags

NGSS.MS-PS4-2

What does refraction mean?

• bending light
• bouncing light

Tags

NGSS.MS-PS4-2

What is this a picture of?

• reflection
• refraction

Tags

NGSS.MS-PS4-2

Why does light refract?

• speeds up

• gets hot

• slows down

• gains energy

Tags

NGSS.MS-PS4-2

Focal length of plane mirror is

• At infinity

• Zero

• Negative

• None of these

Image formed by plane mirror is

• Real and erect

• Real and inverted

• Virtual and erect

• Virtual and inverted

A concave mirror gives real, inverted and same size image if the object is placed

• At F

• At infinity

• At C

• Beyond C

Power of the lens is -40, its focal length is

• 4m

• -40m

• -0.25m

• -25m

In optics an object which has higher refractive index is called

• Optically rarer

• Optically denser

• Optical density

• Refractive index