Physics | Optics

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

Diffraction Interference Mirrors and Images Polarisation Refraction and Reflection

Questions

Choose the correct statement-

ক

Bonsai is simply a pot plant.

খ

Bonsai is considered as an art form.

গ

Bonsai is considered as a form against nature.

ঘ

None of above there.

Which of the following is not related to Kerr effects?

ক

Self-phase modulation

খ

Cross-phase modulation

গ

Four-wave mixing

ঘ

Stimulated Raman Scattering

Choose the correct statement

ক

A transistor will remain on as long the the base current is applied

খ

A transistor remains on after a high to low pulse is applied at the base

গ

A transistor will remain on as long the the collector current is applied

ঘ

A transistor remains on after a high to low pulse is applied at the collector

Identify the correct statement

ক

Peclet number = (Graetz number) (Fourier number)

খ

Peclet number = (Stanton number) (Fourier number)

গ

Peclet number = (Reynolds number) (Prandtl number)

ঘ

Peclet number = (Graetz number) (Reynolds number)

If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used?

ক

Concave

খ

Convex

গ

Cylindrical

ঘ

Plane

The scattering resulting from fiber imperfections like core-cladding RI differences, diameter fluctuations, strains, and bubbles is

ক

Rayleigh scattering

খ

Mie scattering

গ

Stimulated Brillouin scattering

ঘ

Stimulated Raman scattering

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

Which one of the following is not true about the image formed by a plane mirror?

ক

It is of the same size as the subject

খ

It is laterally inverted

গ

It is real image

ঘ

It is formed as far behind the mirror as the object is in front

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