# Get Help with Light and Optics Physics and Ace Your Tests

Recent questions in Light and Optics
Drake Walton 2023-03-25

## What is the focal length of a concave lens?

se2ng0uhp 2023-03-23

## Concave lens always produces virtual image and convex lens always produces real image. A. True B. False

Kendall Murray 2023-03-23

## Focal length of the plano-convex lens is when its radius of curvature of the surface isR and n is the refractive index of the lens.

Leon Bishop 2023-03-21

## A science student is riding on a flat car roof train that is traveling at a constant speed of 10 mph on a straight horizontal track. The student throws a ball into the air along a path that he just made to make an initial angle of 60 degrees with the horizontal and to be in line with the track that the student's professor, who is standing nearby, observes the ball rising. How high does the ball rise vertically?

Rowan Bray 2023-03-21

## Arrange the following colours in the increasing order of their wavelengths. Violet, Red, Green, Blue: A)Violet < Blue < Green < Red; B)Violet < Blue < Red < Green; C)Blue < Violet < Green < Red; D)Violet < Green < Blue < Red

Junior Hess 2023-03-19

## Can light be converted into mass?

Alyssa Hanson 2023-03-19

## Which one of the following statements is true ? Both light and sound waves in air are longitudinal. Both light and sound waves can travel in vacuum. Both light and sound waves in air are transverse. The sound waves in air are longitudinal while the light waves are transverse.

LoomiTymnk63x 2023-03-18

## A heat pump is used to maintain a house at a constant temperature of 22degrees C. The house is losing heat to the outside air through the walls and windows at a rate of 40 MJ/J, while energy generated within the house from the people, lights and appliances amount to 6000kJ/h. For a COP of 2.4, find the power input to the heat pump

vyninisffmy 2023-03-15

## Arrange the following events in a chronological order. Light from a source Object reflects light Reflected light enters our eye Image formation Light falls on an object

Brennen Hawkins 2023-03-13

## What is the magnification of a plane mirror? A)1; B)0; C)2; D)−1

Eliza Berry 2023-03-11

## What must be the index of refraction of the liquid such that the direction of the light entering the liquid is not changed?

Martha Pacheco 2023-03-09

## What happens to a white light when it passes through a prism?

Johnathon Arnold 2023-03-08

## Find the diameter of the image of the moon formed by a spherical concave mirror of focal length 7.6 m. The diameter of the moon is 3450 km and the distance between the earth and the moon is 3.8 xx 10^5 km

xcopyv4n 2023-03-07

## How does the sun produce light? Sun is made of many illuminating particles which emit light Sun just reflects light from other stars to Earth Nuclear reaction in the Sun emits energy in the form of light None of these

Damion Ellis 2023-02-24

## Statement - 1: The difference between two adjacent crests is called wavelength. Statement - 2: Frequency is defined as number of waves that pass a given point in one second. Statement - 3: The maximum displacement shown by a point on a wave measured from its equivalent position is called wave number. A. TTT B. FTT C. TTF D. FFT

mfausantosngcl 2023-02-24