Physics-

General

Easy

Question

# Frequency ranges for micro waves are :

## The correct answer is:

### Related Questions to study

physics-

### The higher frequency TV broad casting bands range is

### The higher frequency TV broad casting bands range is

physics-General

Physics-

### A string of length is fixed at one end and carries a mass at the other end. The string makes revolutions per around the vertical axis through the fixed end as shown in figure, then tension in the string is

(i)

(ii)

From (i) and (ii)

(ii)

From (i) and (ii)

### A string of length is fixed at one end and carries a mass at the other end. The string makes revolutions per around the vertical axis through the fixed end as shown in figure, then tension in the string is

Physics-General

(i)

(ii)

From (i) and (ii)

(ii)

From (i) and (ii)

maths-

### where Pairs which satisfy both the equations is/are

### where Pairs which satisfy both the equations is/are

maths-General

maths-

### The number of integral values of k for which the equation has a solution is

### The number of integral values of k for which the equation has a solution is

maths-General

maths-

### The number of distinct real roots of in the interval is

### The number of distinct real roots of in the interval is

maths-General

maths-

If , then the number of real values of x, which satisfy the equation is :

If , then the number of real values of x, which satisfy the equation is :

maths-General

maths-

### The number of solutions of the equation in the interval is

### The number of solutions of the equation in the interval is

maths-General

maths-

The possible values of such that are :

The possible values of such that are :

maths-General

maths-

### The number of values of x in the interval [0, 3] satisfying the equation , is

### The number of values of x in the interval [0, 3] satisfying the equation , is

maths-General

maths-

The number of solutions of tan x + sec x = 2 cos x in [0, 2], is

The number of solutions of tan x + sec x = 2 cos x in [0, 2], is

maths-General

maths-

Over the solution of is

Over the solution of is

maths-General

maths-

### Solution to inequality cos 2x + 5 cos x + 3 ≥ 0 over is

### Solution to inequality cos 2x + 5 cos x + 3 ≥ 0 over is

maths-General

maths-

### Let The sum of all the solutions of f (x) = 0 in [0, 100p] is

### Let The sum of all the solutions of f (x) = 0 in [0, 100p] is

maths-General

maths-

### The general solution of the trigonometric equation tan x + tan 2x + tan 3x = tan x · tan 2x tan 3x is

where n I

We know that

tan x · tan 2x · tan 3x = tan 3x – tan 2x – tan x

hence tan x + tan 2x + tan 3x = tan 3x – tan 2x – tan x

Þ tan x + tan 2x = 0

\ tan 2x = tan (– x)

2x = np – x

tan x · tan 2x · tan 3x = tan 3x – tan 2x – tan x

hence tan x + tan 2x + tan 3x = tan 3x – tan 2x – tan x

Þ tan x + tan 2x = 0

\ tan 2x = tan (– x)

2x = np – x

### The general solution of the trigonometric equation tan x + tan 2x + tan 3x = tan x · tan 2x tan 3x is

where n I

maths-General

We know that

tan x · tan 2x · tan 3x = tan 3x – tan 2x – tan x

hence tan x + tan 2x + tan 3x = tan 3x – tan 2x – tan x

Þ tan x + tan 2x = 0

\ tan 2x = tan (– x)

2x = np – x

tan x · tan 2x · tan 3x = tan 3x – tan 2x – tan x

hence tan x + tan 2x + tan 3x = tan 3x – tan 2x – tan x

Þ tan x + tan 2x = 0

\ tan 2x = tan (– x)

2x = np – x

maths-

### The sum of all the solution of cotθ= sin 2θ(θ ≠ n, n integer), 0 , is

For the given relation cos q = (2 sin q cos q) sin q, sin q¹ 0

Then the sum of roots is 3p/2

Then the sum of roots is 3p/2

### The sum of all the solution of cotθ= sin 2θ(θ ≠ n, n integer), 0 , is

maths-General

For the given relation cos q = (2 sin q cos q) sin q, sin q¹ 0

Then the sum of roots is 3p/2

Then the sum of roots is 3p/2