Physics-
General
Easy

Question

The intensity of X-rays from a Coolidge tube is plotted against wavelength as shown in the figure. The minimum wavelength found is lambda subscript c end subscript and the wavelength of the K subscript alpha end subscriptline is lambda subscript k end subscript. As the accelerating voltage is increased

  1. left parenthesis lambda subscript K end subscript minus lambda subscript C end subscript right parenthesis rightwards arrow over short leftwards arrow increases    
  2. left parenthesis lambda subscript K end subscript minus lambda subscript C end subscript right parenthesis rightwards arrow over short leftwards arrow decreases    
  3. lambda subscript K end subscript increases    
  4. lambda subscript K end subscript decreases    

The correct answer is: left parenthesis lambda subscript K end subscript minus lambda subscript C end subscript right parenthesis rightwards arrow over short leftwards arrow increases


    Wavelength lambda subscript k end subscript is independent of the accelerating voltage (V), while the minimum wavelength lambda subscript c end subscript is inversely proportional to V. Therefore as V increases, lambda subscript k end subscript remains unchanged whereas lambda subscript c end subscript decreases or lambda subscript k end subscript minus lambda subscript c end subscript will increase.

    Related Questions to study

    General
    Physics-

    Statement–I : When two vibrating tuning forks have f1 = 300 Hz and f2 = 350 Hz and held close to each other; beats cannot be heard
    Statement–II : The principle of superposition is valid only when f1 – f2 < 10 Hz

    Statement–I : When two vibrating tuning forks have f1 = 300 Hz and f2 = 350 Hz and held close to each other; beats cannot be heard
    Statement–II : The principle of superposition is valid only when f1 – f2 < 10 Hz

    Physics-General
    General
    Physics-

    Statement–I : The flash of lightening is seen before the sound of thunder is heard
    Statement–II : The sound of thunder is produced after the flash of lightening

    Statement–I : The flash of lightening is seen before the sound of thunder is heard
    Statement–II : The sound of thunder is produced after the flash of lightening

    Physics-General
    General
    Physics-

    Statement–I : The superposition of the waves y1 = A sin (kx –wt) and y2 = 3A sin(kx + wt) is a pure standing wave plus a travelling wave moving in the negative direction along X–axis
    Statement–II : The resultant of y1 & y2 is y=y1 +y2 = 2A sin kx cos wt+2A sin (kx+wt)

    Statement–I : The superposition of the waves y1 = A sin (kx –wt) and y2 = 3A sin(kx + wt) is a pure standing wave plus a travelling wave moving in the negative direction along X–axis
    Statement–II : The resultant of y1 & y2 is y=y1 +y2 = 2A sin kx cos wt+2A sin (kx+wt)

    Physics-General
    parallel
    General
    Physics-

    Four open organ pipes of different length and different gases at same temperature as shown in figure. Let fA , fB , fC and fD be their fundamental frequencies then:–text  [Take  end text open gamma subscript C O subscript 2 end subscript end subscript equals 7 divided by 5 close square brackets

    Four open organ pipes of different length and different gases at same temperature as shown in figure. Let fA , fB , fC and fD be their fundamental frequencies then:–text  [Take  end text open gamma subscript C O subscript 2 end subscript end subscript equals 7 divided by 5 close square brackets

    Physics-General
    General
    Physics-

    A clamped string is oscillating in nth harmonic, then:–

    A clamped string is oscillating in nth harmonic, then:–

    Physics-General
    General
    Physics-

    Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A, blows a horn of frequency 450 Hz. Then the apparent frequency heard by B is (The velocity of sound is 330 m/s):–

    Two trains A and B are moving in the same direction with velocities 30 m/s and 10 m/s respectively, B is behind from A, blows a horn of frequency 450 Hz. Then the apparent frequency heard by B is (The velocity of sound is 330 m/s):–

    Physics-General
    parallel
    General
    Physics-

    A closed organ pipe of radius r1 and an open organ pipe of radius r2 and having same length 'L' resonate when excited with a given tuning fork. Closed organ pipe resonates in its fundamental mode where as open organ pipe resonates in its first overtone, then:

    A closed organ pipe of radius r1 and an open organ pipe of radius r2 and having same length 'L' resonate when excited with a given tuning fork. Closed organ pipe resonates in its fundamental mode where as open organ pipe resonates in its first overtone, then:

    Physics-General
    General
    Physics-

    A cylindrical tube (L = 120 cm.) is in resonance with a tuning fork of frequency 330 Hz. If it is filling by water then to get resonance again, minimum length of water column is (vair = 330 m/s):–

    A cylindrical tube (L = 120 cm.) is in resonance with a tuning fork of frequency 330 Hz. If it is filling by water then to get resonance again, minimum length of water column is (vair = 330 m/s):–

    Physics-General
    General
    Physics-

    A wave is represented by the equation y = a sin(kx – wt) is superimposed with another wave to form a stationary wave such that the point x = 0 is a node. Then the equation of other wave is:–

    A wave is represented by the equation y = a sin(kx – wt) is superimposed with another wave to form a stationary wave such that the point x = 0 is a node. Then the equation of other wave is:–

    Physics-General
    parallel
    General
    Physics-

    A copper wire is fixed between two rigid supports. It is stretched with negligible tension at 30°C. The speed of transverse waves in the wire at 10°C will be– (density d = 9 × 103 kg/m3 , Young's modulus Y = 1.3 × 1011 N/m² and temperature coefficient of expansion a = 1.7 × 10–5 /°C):–

    A copper wire is fixed between two rigid supports. It is stretched with negligible tension at 30°C. The speed of transverse waves in the wire at 10°C will be– (density d = 9 × 103 kg/m3 , Young's modulus Y = 1.3 × 1011 N/m² and temperature coefficient of expansion a = 1.7 × 10–5 /°C):–

    Physics-General
    General
    Chemistry-

    The correct order of case of dehydration of following is:
    I)
    II)
    III) 

    The correct order of case of dehydration of following is:
    I)
    II)
    III) 

    Chemistry-General
    General
    Chemistry-

    The S subscript N to the power of 1 end exponent end subscriptreactivity of the following halides will be in the order:
    i) open parentheses C H subscript 3 end subscript close parentheses subscript 3 end subscript C minus B r
    ii) open parentheses C subscript 6 end subscript H subscript 5 end subscript close parentheses subscript 2 end subscript C H B r
    iii) open parentheses C subscript 6 end subscript H subscript 5 end subscript close parentheses subscript 2 end subscript C open parentheses C H subscript 3 end subscript close parentheses B r
    iv) open parentheses C H subscript 3 end subscript close parentheses subscript 2 end subscript C H B r
    v) C subscript 2 end subscript H subscript 5 end subscript B r

    The S subscript N to the power of 1 end exponent end subscriptreactivity of the following halides will be in the order:
    i) open parentheses C H subscript 3 end subscript close parentheses subscript 3 end subscript C minus B r
    ii) open parentheses C subscript 6 end subscript H subscript 5 end subscript close parentheses subscript 2 end subscript C H B r
    iii) open parentheses C subscript 6 end subscript H subscript 5 end subscript close parentheses subscript 2 end subscript C open parentheses C H subscript 3 end subscript close parentheses B r
    iv) open parentheses C H subscript 3 end subscript close parentheses subscript 2 end subscript C H B r
    v) C subscript 2 end subscript H subscript 5 end subscript B r

    Chemistry-General
    parallel
    General
    Physics-

    Two wave are represented by equation y1 = a sin wt and y2 = a cos wt the first wave:–

    Two wave are represented by equation y1 = a sin wt and y2 = a cos wt the first wave:–

    Physics-General
    General
    Physics-

    You are given four tuning forks, the lowest frequency of the forks is 300 Hz. By striking two tuning forks at a time any of 1, 2, 3, 5, 7 & 8 Hz beat frequencies are heard. The possible frequencies of the other three forks are-

    You are given four tuning forks, the lowest frequency of the forks is 300 Hz. By striking two tuning forks at a time any of 1, 2, 3, 5, 7 & 8 Hz beat frequencies are heard. The possible frequencies of the other three forks are-

    Physics-General
    General
    Physics-

    Two strings, A and B, of lengths 4L and L respectively and same mass M each, are tied together to form a knot 'O' and stretched under the same tension. A transverse wave pulse is sent along the composite string from the side A, as shown to the right. Which of the following diagrams correctly shows the reflected and transmitted wave pulses near the knot 'O'?

    Two strings, A and B, of lengths 4L and L respectively and same mass M each, are tied together to form a knot 'O' and stretched under the same tension. A transverse wave pulse is sent along the composite string from the side A, as shown to the right. Which of the following diagrams correctly shows the reflected and transmitted wave pulses near the knot 'O'?

    Physics-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.