Question

# A light ray is incident perpendicular to one face of 90° prism and is totally internally reflected at the glass-air interface. If the angle of reflection is 45° We conclude that the refractive index.....

## The correct answer is:

### Related Questions to study

### A ray falls on a prism ABC(AB=BC) and travels as shown in the figure. The minimum refractive, index of the prism material should be.

### A ray falls on a prism ABC(AB=BC) and travels as shown in the figure. The minimum refractive, index of the prism material should be.

### Two parallel light rays are incident at one surface of a prism of refractive index 1.5 as shown in figure. What is the angle between the rays as they emerge ?

### Two parallel light rays are incident at one surface of a prism of refractive index 1.5 as shown in figure. What is the angle between the rays as they emerge ?

### is decreasing in

We should know the formulas of differentiation. And, we should know the condition for increasing and decreasing function.

### is decreasing in

We should know the formulas of differentiation. And, we should know the condition for increasing and decreasing function.

### The interval of increase of the function is

For such questions, we should know different formulas of differentiation.

### The interval of increase of the function is

For such questions, we should know different formulas of differentiation.

### In experiment of the potentiometer wire of length 100 cm has a resistance of 10, It is connected in series with a resistance R and a cell of emf 2 volts and of negligible internal resistance. A Source of emf 10mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of the external resistance?

### In experiment of the potentiometer wire of length 100 cm has a resistance of 10, It is connected in series with a resistance R and a cell of emf 2 volts and of negligible internal resistance. A Source of emf 10mV is balanced against a length of 40 cm of the potentiometer wire. What is the value of the external resistance?

### The function is

For such questions, we should check the rules of increasing and decreasing function.

### The function is

For such questions, we should check the rules of increasing and decreasing function.

### If the function is decreasing in its domain then

### If the function is decreasing in its domain then

### The function is

We have to see the rules for a increasing and decreasing function.

### The function is

We have to see the rules for a increasing and decreasing function.