Which one of the following lenses is a converging lens? A) convexo-concave lens B) Plano-concave lens C) double-convex lens. D) spherical-convex lens

Answers

Answer 1

Answer: A converging lens (or convex lens) is curved on both sides. This means the light rays coming out of it come together at a point – they converge. Diagram of how a lens works. The point at which the light rays meet is called the focal point.sooo.......D

Related Questions

Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct?-Brody is correct because the wave involves an input of energy. -Ethel is correct because energy is not carried from one place to another. -Brody is correct because the pattern repeats. -Ethel is correct because the motion has no pattern. Also... Khalad is measuring the amplitude of a wave. What can be known about this wave? -It is a sound wave. -It is a transverse wave. -It is an electromagnetic wave. -It is a mechanical wave.
Why does earth have the youngest surface of all the terrestrial planets today?
Explain the law of conservation of energy.
A cylindrical water tank has a radius of 3 yards in the 7.5 yards high what is the volume of the tank
Work done by the resultant force is always equal to change in kinetic energy a)True b)False

IN a physics lab, a student discovers that the magnitude of the magnetic field at a certain distance from a long wire is 4.0μT. If the wire carries a current of 5.0 A, what is the distance of the magnetic field from the wire?

Answers

Answer:

0.25 m

Explanation:

The intensity of the magnetic field around a current-carrying wire is given by:

$B=(\mu_0 I)/(2 \pi r)$

where

$\mu_0 = 4\pi \cdot 10^(-7)Tm/A$ is the permeabilty of free space

I is the current

r is the distance from the wire

In this problem, we know:

$B=4 \mu T=4 \cdot 10^(-6) T$ is the magnetic field

$I=5.0 A$ is the current in the wire

Re-arranging the equation, we can find the distance of the field from the wire:

$r=(\mu_0 I)/(2 \pi B)=((4\pi \cdot 10^(-7))(5.0 A))/(2\pi(4\cdot 10^(-6) T))=0.25 m$

Some folded mountains result from the collision of continental plates.
a. True
b. False

Answers

it true be cause when one goes under another the ground rise and makes what we call a mountain so therefore it is treu

A pair of equal charges are separated by .75 m. There's a 2500 N force acting on them. What is the strength of the charge? Plz explain how you got the answer too.

Answers

The magnitude of each charge is 3.94 x $10^(-4)$ coulombs.

We have a pair of equal charges are separated by 0.75 m and there's a 2500 N force acting on them.

We have to strength of the charge.

What is the formula to calculate the force between two point charges separated by a some distance?

According to Coulomb's law, the formula to calculate the force between the two point charges (say q and Q) separated by a some distance (say r) is given by -

F = $(1)/(4\pi \epsilon_(o) ) (qQ)/(r^(2) )$

According to the question -

Force between two point charges equals to = F = 2500 N

Distance between the point charges = 0.75 m

Let's assume the magnitude of each charge be x, therefore using the coulomb's law, we get -

F = $(1)/(4\pi \epsilon_(o) ) (qQ)/(r^(2) )$

$x^(2) = (2500 * 0.75* 0.75)/(9* 10^(9) )\nx^(2) = (2500* 75* 75)/(9* 10^(13) ) \nx^(2) = 1.56* 10^(-7)$

$x = 0.000394\nx = 3.94 * 10^(-4)$ coulombs

Hence, the magnitude of each charge is 3.94 x $10^(-4)$ coulombs.

To understand more about coulomb's law visit the link below -

brainly.com/question/506926

#SPJ2

Answer:

4.5643546 × 10^ -4

Explanation:

Earths inner core is

Answers

is Earth's most innermost part . i think .

earths inner core is solid.

What did Ernest Rutherford expect to happen when he aimed a beam of particles at a thin gold foil?

Answers

When Ernest Rutherford aimed a beam of particles at a thin gold foil he expected that the particles would be deflected slightly after passing through the foil.

Further Explanation;

An atom

An atom is the smallest particle of an element that takes part in a chemical reaction.
It is made up of a nucleus and energy levels.
Atoms contain sub atomic particles; electrons found in the energy levels, neutrons and protons found in the nucleus of the atom.
Electrons are negatively charged, protons are positively charged while neutrons have no charge.
The positive charge of protons gives nucleus a positive charge which attracts the opposite charged electrons.

Rutherford Experiment

Rutherford carried out an experiment where he fired alpha particles at a piece of gold foil.
He found that about 1/800 of the alpha particles fired bounced back off of the gold foil.
He therefore, concluded that there was a part of the atom that was very dense, and that there was also lots of empty spaces.
According to Rutherford's model an atom contains a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus similar to the structure of the Solar system.

Shortcoming of Rutherford's model

Rutherford's model of the atom failed to explain why electrons were not pulled into the atomic nucleus by the attraction of opposite charges of the nucleus and electrons.

Keywords: Atom, Rutherford experiment, gold foil, nucleus of an atom, setbacks of Rutherford's model

Learn more about:

An atom: brainly.com/question/3335747
Rutherford's model: brainly.com/question/3335747
Short coming of Rutherford's model: brainly.com/question/3335747
Difference between Rutherford's and Bohr's model: brainly.com/question/3335747

Level: High school

Subject: Chemistry

Topic: Structure of an atom and Atomic models

Sub-topic: Rutherford's and Bohr's model

The particles would be deflected slightly after passing through the foil

Why does the same side of the moon always face the earth?

Answers

Because the moon takes exactly precisely the same time to rotate once on its axis as it takes to revolve once in its orbit around the Earth.

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