All categories

3 years ago

What is the approximate wavelength of a light whose first-order bright band forms a diffraction angle of 45.0° when it passes

1 answer:

7 0

** Missing info: Lines per mm = 500 **

Ans: The wavelength is = λ = 1414.21 nm

Explanation:
The formula for diffraction grading is:

dsinθ = mλ --- (1)

Where
d = 1/lines-per-meter = (1/500)*10^-3 = 2 * 10^-6
m = order = 1
λ = wavelength
θ = 45°

Plug in the values in (1):
(1) => 2*10^-6*sin(45°) = (1)λ
=> λ = 1414.21 nm

You might be interested in

find the upward force in Newton when each of these is under water(density of 1g/cm3) a lump of iron of volume 2000cm3

shutvik [7]

Answer:

Upthrust = 19.6 N

Explanation:

When an object is immersed under water, the upward force it experience is called an upthrust. An upthrust is a force which is applied on any object in a fluid which acts in an opposite direction to the direction of the weight of the object.

Upthrust = density of liquid x gravitational force x volume of object

i.e U = ρ x g x vol

Given: ρ = 1g/ $cm^{3}$ (1000 kg/ $m^{3}$ ), volume = 2000 c $m^{3}$ (0.002 $m^{3}$ ) and g = 9.8 m/ $s^{2}$

So that;

U = 1000 x 9.8 x 0.002 (kg/ $m^{3}$ x $m^{3}$ x m/ $s^{2}$ )

= 19.6 Kg m/ $s^{2}$

U = 19.6 Newtons

The upthrust on the iron is 19.6 N.

5 0

2 years ago

A 30kg uniform solid cylinder has a radius of 0.18m. if the cylinder accelerates at 0.023 rad/s^2 as it rotates about an axis th

Nuetrik [128]

Answer:

0.011 N-m

Explanation:

Given that

The mass of a solid cylinder, m = 30 kg

The radius of the cylinder, r = 0.18 m

The acceleration of the cylinder, $\alpha =0.023\ rad/s^2$

It rotates about an axis through its center. We need to find the torque acting on the cylinder. The formula for the torque is given by :

$\tau=I\alpha$

Where

I is the moment of inertia of the cylinder,

For cylinder,

$I=\dfrac{mr^2}{2}$

So,

$\tau=\dfrac{mr^2\alpha }{2}\\\\\tau=\dfrac{30\times (0.18)^2\times 0.023 }{2}\\\\\tau=0.011\ N-m$

So, the required torque on the cylinder is 0.011 N-m.

7 0

2 years ago

Write the examples of unit

OLga [1]

Answer:

The definition of a unit is a fixed standard amount or a single person, group, thing or number. An example of a unit is a single apartment in an apartment building

5 0

2 years ago

What is the net force on a bathroom scale when a 150-pound person stands on it

andreev551 [17]

Answer:

Zero, the support force and gravitational force together equal a zero net force

Explanation:

7 0

2 years ago

If you are given three different capacitors, how many different combinations of capacitance can you produce, using all capacitor

MrRa [10]

Answer:

Explanation:

Let there are three capacitances, C1, C2, and C3.

Combination I:

All the three are connected in series combination.

Combination II:

All the three are connected in parallel combination.

Combination III:

C1, C2 are in parallel and then C3 in series.

Combination IV:

C1, C3 are in parallel and then C2 in series.

Combination V:

C3, C2 are in parallel and then C1 in series.

6 0

2 years ago