FLP-16

Wave nature of light is proved by:

In electron microscope image formed is

Minimum energy required for pair production is:

A full wave rectifier is operating from 50Hz mains. Fundamental frequency of ripple will be

Work function depends on:

Charge of photon is

Which light has more velocity

What will be the de-Broglie wavelength when the kinetic energy of the electron increases by 5 times?

p-n junction when reversed biased acts as a ______________

If n number of photon are striking on a metal surface, then total momentum exerted is ___________ 

During the half wave rectification, when diode is reverse biased the voltage drop across load resistance is   

De-Broglie waves are associated with

As the intensity of incident light increases 

De-Broglie wavelength associated with an electron at a speed of 1 × 10⁶m/s

The relation between energy “E” and momentum “P” for photon is

Einstein’s Photoelectric equation is   in this equation EK measure 

Stopping potential depends upon

A p-n junction diode can be used as

For a given speed, which of the following has the shortest de-Broglie wavelength?

Ultraviolet radiation of 6.2 eV falls on an aluminum surface having work function = 4.2 eV. The kinetic energy of the fastest electron emitted is

Which photon of radiation having maximum energy

The stopping potential to prevent electrons from flowing across a photo electric cell is 4.0V. What maximum K.E is given to the electrons by the incident light?

If   are the respective kinetic energies of an electron, an alpha-particle and a proton, each having the same de-Broglie wavelength then

The momentum of photon is 3.3 × 10^-29 kgm/s. Its frequency will be

Let nr and nb be respectively the number of photons emitted by a red bulb and a blue bulb of equal power in a given time. Then 

The De-Broglie of wavelength of particle of mass moving with the kinetic energy  

Davisson and Germer indicates _______ in their experiment.

The electrons behave as waves because they can be: 

In Davison and Germer experiment, the angle between incident beam and diffracted beam is called: 

The reverse process of photoelectric effect is

Wave nature of light appears in

The magnitude of de-Broglie wavelength  of electrons (e), proton (p), neutron (n), and   particles all have the same energy 1 MeV, in increasing order will follow the sequence.

Of the following moving with same momentum, the one which has largest wavelength is:

Wave is associated with matter

Dual nature of radiation is shown by

The kinetic energy of electron and proton is 10^-32J. Then the relation between their de-Broglie wavelengths is

If the momentum of a photon is p, then its frequency is

Full wave rectifier called center-tap design, uses

Hal wave rectifier circuit uses ________ to couple the AC input voltage from the source to the rectifier

In half wave rectifier the peak inverse voltage (PIV) is the maximum voltage that the rectifying diodes has to withstand, when it is

The work function of a metal is 6.63 eV, its threshold frequency is:

In photoelectric effect, the graph showing the variation of cut – off voltage (V0) with the frequency of incident radiation (f) is 

Indivisible tiny bundles of energy in electromagnetic radiation is named as

In photoelectric effect when monochromatic light is allowed to shine on cathode, it begins to

In a half wave rectifier, the current through load resistance flows only in

A proton, accelerated through a p.d V has a certain de Broglie wavelength. In order to have the same de Broglie wavelength, an – particle must be accelerated through a potential difference

A material particle with a rest mass mo is moving with speed of light c. The associated de-Broglie wavelength is given by

If an electron is accelerated through a potential difference of 54 volts, its de-Broglie wavelength will be:

The momentum of photon is 3.3 × 10^-29kgm/s. Its frequency will be

When the frequency of incident photon is just equal to threshold frequency, the K.Emax of photoelectron is

Which of the following is deciding factor for reactivity of alkyl halide 

2-Iodo-2-methylpentane is an example of

By considering the factor ‘Bond Energy’ which is the correct order for reactivity of R – X?

In SN reactions of alkyl halides, Nucleophile attacks on

Attacking of Nucleophile and leaving of leaving group happens simultaneously in:

During SN1 mechanism, change in state of hybridization of carbon atom in first step is 

The rate equation, Rate = k [Alkyl Halide] can be considered for

SN1 reaction can be best carried out with _______

The mechanism involved in the given reaction is

In tertiary alkyl halides, the halogen atom is attached to a carbon atom which is further attached to _______ carbon atoms.

The intermediate formed during SN2 mechanism has hybridization

The product formed when excess of ammonia is allowed to react with ethyl bromide.

What is the product formed in given reaction?  CH₃CH₂Cl + CH₃COONa →?

In β-Elimination reaction, nucleophile attacks on

X in the above reaction is:

CN- attacks on which alkyl halide to give propane nitrile?

If OH- attacks on electrophilic carbon atom of alkyl halide, the product is _____ and if it attacks on β – hydrogen the product is ________.

The order of the given reaction is:  (CH₃)₃CBr + OH- → (CH₃)₃COH + Br –

First step is same for which mechanism

50% retention of molecule configuration is observed in 

Which of the following compound will follow both SN1 and SN2 mechanism?

CnH_2n+2O is the general formula of

Hydroxy derivatives of paraffins are

In the reaction of alcohol, if the intermediate forms is a carbocation, this means that

Alcohol + Carboxylic acid  Ester + Water For above reaction, reactivity order of alcohols is:

Ethers can be obtained from alcohols by which type of reaction.

Due to involvement of negative charge of oxygen in the ring of benzene 

The order of reactivity of alcohols when C – O bond breaks:

2-Bromopropane + KOH(aq) What are X and Y in above reaction?

Phenol on reaction with concentrated nitric acid produces 

Which pair is incorrectly matched?

Upon hydrogenation of phenol at 150°C in the presence of Ni catalyst, we get

When aliphatic aldehyde is treated with Fehling’s solution, a brick-red precipitate of ______ is formed 

Phenyl hydrazone is formed on treatment of carbonyl compound with

Which of the following reagent reacts with both aldehydes and ketones

Aldehydes and ketones are functional group isomers with general formula  

Isobutyl alcohol on oxidation gives compound, which contains functional group of 

Why is it necessary to distill aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution?

What are X and Y in the given reaction 

Which of the following is most reactive

Which of the following reagent is used for above reaction

Cannizzaro’s reaction is given by

Formaldehyde reacts with HCN (NaCN + HCl) to give a compound

Iodoform test will not be positive with

The reaction of aldehydes and ketones with ammonia derivative G-NH₂ to form compounds containing the group and water is known as _________reaction.         

Which of the following give positive iodoform test as well as silver mirror test 

Aldehydes and small methyl ketones react with a saturated aqueous solution of sodium bisulphite to form a crystalline

Aldehyde and ketone react with hydroxylamine to form _____ 

Reaction of ethanal and propanone with HCN is example of ______ reaction 

Aldehyde and ketone react with 2,4-DNPH to form _____ 

Which of the following is found in the interstitial connective tissue of testis?

Location of Leydig cells and their secretions are:

Which of the following is correct about mammalian testes?

Rete testis opens to:

If the vasa differentia of a man are surgically cut or blocked:

Cowper’s gland secretes a substance to:

Which of the following sugars in semen is a source of energy for the spermatozoa?

Supporting cells found in between the germinal epithelium of testis are called:

Graafian follicles are formed from:

The release of mature ovum from graafian follicle is known as:

After ovulation, the collapsed ovarian follicle shrinks and becomes filled with cells to form:

When both ovaries are removed from a rat which hormone is decreased in blood:

The starting of menstruation in girls is:

Graafian follicle is maintained by:

Which of the following statements is incorrect about menstruation?

Ovulation in the human female normally takes place:

Which one of the following pairs is diploid?

In humans, at the end of first meiotic division, the male germ cells differentiates into the:

Polar bodies are produced during the formation of:

During oogenesis in mammals, the second meiotic division occurs:

Which statement about oocytes is true?

On average, the sperms released to fertilize ovum are active for how many days?

Contraceptive oral pills used by females help in birth control by:

Besides activating the egg, another role of a sperm is to carry to egg:

Which of these is not a major functional characteristic of muscle?

Structural and functional unit of contractile apparatus in striated muscle is called:

Which of the following proteins is found in the thick filaments of skeletal muscles?

Myosin myofilaments are:

Which of the following is the contractile protein of a muscle?

During contraction of skeletal muscle Ca2+ bind to:

If a muscle undergoes a rapid contraction and relaxation, the sarcoplasmic reticulum extension:

Rigidity that develops in the muscle after death is known as: