Refraction of Light

Q.

In optics, an object which has a higher refractive index is optically denser.

1. True

2. False

Q. The phenomenon of bending of light due to change in the speed of the light as the light travels from one medium to another is called ________.

1. refraction
2. reflection
3. transmission
4. absorption

Q. According to Snells law, the factor that remains constant for a given pair of media and different angles of incidence and refraction is:

1. Wavelength
2. Speed
3. Distance
4. Refractive index

Q.

Water is optically denser than air.

1. True
2. False

Q. Magnification produced by a spherical mirror is the ratio of the ______.

1. height of the image to the height of the object.
2. height of the object to the height of the image.
3. object distance to the image distance.
4. image distance to the object distance.

Q.

Draw a simple labeled diagram to show the refraction of a light ray going from a denser medium to a rarer medium.

Q.

The adjoining figure shows the path of a light ray travelling from a transparent medium A to another transparent medium B. The refractive index of medium B w.r.t. A is

1. $\sqrt{2}$

2. $\frac{1}{\sqrt{2}}$

3. $\sqrt{\frac{3}{2}}$

4. $\sqrt{\frac{2}{3}}$

Q.

The Refractive index is a measure of the ___________ of light when a ray travels from one medium to another.

Q. Light travel faster in medium A than in medium B. Medium A is said to be optically _______.

1. denser
2. rarer
3. translucent
4. opaque

Q.

The pencil immersed partly in water appears to be bent due to

Q. Which of the following option depicts the path of light correctly?

1. 
2. 
3. 
4. 

Q. Light travel faster in medium A than in medium B. Medium A is said to be optically _______.

1. denser
2. rarer
3. translucent
4. opaque

Q.

Lateral displacement depends on ______ of the glass slab.

Q. An object will sink into a liquid, if its density is greater than that of the liquid.

1. True
2. False

Q. A light ray is passing through the mediums U, V, W, and X. In which medium will the refractive index be maximum?

1. U
2. V
3. W
4. X

Q. What is the unit of the refractive index?

1. No unit
2. Kilogram
3. Metre
4. Seconds

Q. An object will sink into a liquid, if its density is greater than that of the liquid.

1. True
2. False

Q.

The speed of light in vacuum depends upon

1. frequency

2. amplitude

3. wavelength

4. none of these

Q. What is the unit of the refractive index?

1. Seconds
2. No unit
3. Metre
4. Kilogram

Q. The swimming pool appears to be less deep than it actually is. Which of the following phenomenon is responsible for this?

1. Refraction of light
2. Diffusion of light
3. Scattering of light
4. Reflection of light

Q.

how does density of material of a body determine whethr it will float or sink in water?

Q. A student when discussing the properties of a medium (except vacuum) writes

1. Dimensionally correct
2. Dimensionally incorrect
3. Numerically incorrect
4. Both a and c