Optics | Refraction and Reflection

Practice Optics | Refraction and Reflection on Bissoy — browse topics below and open any question.

Questions

Which one among the following statements is correct?

ক

All arteries carry oxygenated blood

খ

All veins carry oxygenated blood

গ

Except the pulmonary artery, all other arteries carry oxygenated blood

ঘ

Except the pulmonary vein, all other veins carry oxygenated blood

Identify the incorrect statements.

ক

Consumer Disputes involving private insurance companies can be heard by Consumer Forum or commission

খ

Life Insurance does not come under Consumer Protection Act 1986

গ

Complaints can be lodged against private insurers as also public sector companies/corporation like LIC

ঘ

Complaints can be lodged only life insurance companies as also non-life insurance companies

Twinkling of stars is due to

ক

large distance of stars and storms in air

খ

rotation of earth

গ

large size of stars

ঘ

large distance of stars and fluctuations in the density of air

Rainbow is formed due to

ক

refraction and dispersion

খ

scattering and refraction

গ

diffraction and refraction

ঘ

refraction and reflection

When a ray of light enters a glass slab, then

ক

only the frequency change

খ

frequency and velocity change

গ

frequency does not change

ঘ

frequency and wavelength change

In case of a concave mirror, if an object is kept between principal focus F and pole P of the mirror, then which one of the following statements about the image is not correct?

ক

The image will be virtual

খ

The image will be enlarged or magnified

গ

The image will be formed at infinity

ঘ

The image will be erect