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Assertion : In a movie, ordinarily 24 fr...

Assertion `:` In a movie, ordinarily 24 frames are projected per second from one end to the other of the complete film.
Reason `:` The image formed on retina of eye is sustained up to `1//10s` after the removal of stimulus.

A

If both the assertion and reason are true and reason explains the assertion.

B

If both the assertion and reason are true but reason does not explain the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C
When the movie is screened, the frames are displayed on after the other at the rate of `24` frames per second. The image of an object is formed on the retina. From where it is sent to the brain. If the object moves, the brain continues to show the old image for about one sixteenth of a second.
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Read the statements given below. Identify and write the concept upon which the given statement is based. Identify and write the name of phenomenon that allows the image formed on retina to remain imprinted there for (1^(th))/(16) of a second after the object is removed from the front of the eyes.

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The English alphabet is categorised into 5 groups, each starting with a vowel and encompassing the immediately following consonants in the group. Thus, the first group would have letters A, B,C and D, the second E, F, G and H, and so on. These groups are assigned values as 10 for the first, 20 for the second, and so on, up to 50 the last. Every letter in a particular group will have the same value of the group when used to form words. The value of each letter should add up to compute the value of the word. If the word has letters only from the same group, the value of the word would be the value of the letter multiplied by the number of letters in the word. However, if the letters in a word are from different groups, the value of the first letter of the word and any other letter of that group will be the same as that of its group, but that of the subsequent letter will he ‘double’ as much as the value of its group. For example: The value of ‘CAB’ will be 30 (i.e. 10 + 10 + 10 ) as all the three letters are from the first group, each one having a value of 10. The value of ‘BUT’ will be 10 + (50*2) + (40*2)= 190 The value of ‘JUNK’ will be 30 + (50*2) + 30 + 30 = 190 . Now, find out the value of each word in the following questions: HIGH 1) 40 2) 60 3) 70 4) 80 5) None of these

The English alphabet is categorised into 5 groups, each starting with a vowel and encompassing the immediately following consonants in the group. Thus, the first group would have letters A, B,C and D, the second E, F, G and H, and so on. These groups are assigned values as 10 for the first, 20 for the second, and so on, up to 50 the last. Every letter in a particular group will have the same value of the group when used to form words. The value of each letter should add up to compute the value of the word. If the word has letters only from the same group, the value of the word would be the value of the letter multiplied by the number of letters in the word. However, if the letters in a word are from different groups, the value of the first letter of the word and any other letter of that group will be the same as that of its group, but that of the subsequent letter will he ‘double’ as much as the value of its group. For example: The value of ‘CAB’ will be 30 (i.e. 10 + 10 + 10 ) as all the three letters are from the first group, each one having a value of 10. The value of ‘BUT’ will be 10 + (50*2) + (40*2)= 190 The value of ‘JUNK’ will be 30 + (50*2) + 30 + 30 = 190 . Now, find out the value of each word in the following questions: SPORT 1) 200 2) 360 3) 380 4) 250 5) None of these

The English alphabet is categorised into 5 groups, each starting with a vowel and encompassing the immediately following consonants in the group. Thus, the first group would have letters A, B,C and D, the second E, F, G and H, and so on. These groups are assigned values as 10 for the first, 20 for the second, and so on, up to 50 the last. Every letter in a particular group will have the same value of the group when used to form words. The value of each letter should add up to compute the value of the word. If the word has letters only from the same group, the value of the word would be the value of the letter multiplied by the number of letters in the word. However, if the letters in a word are from different groups, the value of the first letter of the word and any other letter of that group will be the same as that of its group, but that of the subsequent letter will he ‘double’ as much as the value of its group. For example: The value of ‘CAB’ will be 30 (i.e. 10 + 10 + 10 ) as all the three letters are from the first group, each one having a value of 10. The value of ‘BUT’ will be 10 + (50*2) + (40*2)= 190 The value of ‘JUNK’ will be 30 + (50*2) + 30 + 30 = 190 . Now, find out the value of each word in the following questions: SHOP 1) 70 2) 120 3) 130 4) 140 5) None of these

Knowledge Check

  • Assertion (A) : in a motion picture usually 24 frames are projected every second over the whole length of the film Reason (R) : An image formed on the retina of eye persists for about o/s after the removal of stimulus Codes

    A
    both A and R and true and R is the correct explanation of A
    B
    both A and R are true but R is not a correct explanation of A
    C
    A is true but R is false
    D
    A is false but R is true

  • Assertion: If a body is dropped from the top of a twoer of height h and another body is thrown up simultaneously with velocity u from the foot of the tower, then both of them would meet after a time (h)/(u) . Reason: For a body projected upwards, the distance covered by the body in the last second of its upwards journey is always 4.9m irrespective of velocity of projection (g=9.8 m//s^(2))

    A
    If both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.
    B
    If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.
    C
    If Assertion is Trie but the Reason is False.
    D
    If both Assertion `&` Reason are false

  • Read the passage given below and answer the following questions: The transition metals when exposed to oxygen at low and intermediate temperatures form thin, protective oxide films of up to some thousands of Angstroms in thickness. Transition metal oxides lie between the extremes of ionic and covalent binary compounds formed by elements from the left or right side of the periodic table. They range from metallic to semiconducting and deviate by both large and small degrees from stoichiometry. Since d-electron bonding levels are involved, the cations-exist in various valence states and hence give rise to a large number of oxides. The crystal structures are often classified by considering a cubic or hexagonal close-packed lattice of one set of ions with the other set of ions filling the octahedral or tetrahedral interstices. The actual oxide structures, however, generally show departures from such regular arrays due in part to distortions caused by packing of ions of different size and to ligand field effects. These distortions depend not only on the number of d-electrons but also on the valence and the position of the transition metal in a period or group. Assertion (A): Transition metals form protective oxide films. Reason (R): Oxides of transition metals are always stoichiometric.

    A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
    B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
    C
    Assertion is correct statement but reason is wrong statement.
    D
    Assertion is wrong statement but reason is correct statement.