1.52 A
2.0A
3.52
2.52A
20 A
40A
30A
10A
`10^20`
`10^16`
`10^18`
`10^19`
`i alpha (1)/d_2)`
`i alpha d^2`
`i alphad`
`i alpha 1/d`
`v_0 //9`
`9v_0`
`4v_0`
`2v_0`
10.2 eV
4.1 eV
3.7 eV
2.1 eV
4 : 5
5 : 4
25: 16
16: 25
`4.18m//s`
`5.18m//s`
`6.18 m//s`
`3.18rn//s`
`2 xx 10^6 m//s`
`2 xx 10^5 m//s`
speed of sound
zero
`h/(2pi)`
`(2nh)/(pi)`
`h/2`
`(n-1) (h)/(2pi)
0.53 mm
53 A
0.53 A
5.3 A
`((2.5)/(5000))eV`
`[(2.5)/(5000)^2eV`
`2.5 xx (5000)^2 eV`
`[2.5xx 5000) eV`
7 eV
3.2 eV
1.6 eV
1 eV
21.75 eV
more than 3 eV
less than 3 eV
3 eV
`0.5:xx10_19 J`
`4xx10^(-19)J`
`2xx10(-19) J`
`10 xx 10^(-19) J`
0.5 eV
1.1 eV
1.5 eV
2.0 eV
3.8 V
1.8 V
2.8 V
0.8 V
`1.759 xx 10^11C /kg`
`1 672 xx(-27) c 1 kg`
`1.62 xx 10^10 C/kg`
`9.11xx10^21 C/kg`
`3xx10^7m//s`
`1.5xx10^7m//s`
`3.6 xx 10^6m//s`
`6 xx 10 7m//s`
`3xx10^7m//s`
`1.5xx10^7m//s`
`3.6 xx 10^6m//s`
`6 xx 10 7m//s`
either less or greater than velocity of light c
less than velocity of light c
equal to velocity of light c
greater than velocity of light c
c
c/2
c/10
c/137
C.V. Raman
Davison and Germer
de-Broglie
J. J. Thomson
10
18
22
16
stationary elliptical orbit
radiating circular orbit
stationary circular orbit
arbitrary circular orbit
van der Walls' forces
gravitational forces
nuclear forces
coulomb forces
frequency
momentum
energy
rest mass
cloud chamber
thermocouple
photocell
Coolidge tube
`hc/lambda`
`h/lambda`
`h/clambda`
zero
`1/hlambda`
`lambda/h`
`h/lambda`
`hlambda`
angular momentum
linear momentum
linear mass
energy
explanation of photoelectric effect
unified field of theory
general theory of relativity
special theory of relativity
is different for different metals
is same for all metals
depends upon the frequency of light
None of the above
a zinc plate is irradiated with light
a zinc plate is subjected to high pressure
a zinc plate is hammered
a zinc plate is heated
Bohr
Einstein
Maxwell
Planck
Bragg's
Aston
Goldstein
Thomson
Ultraviolet rays
X-rays
`gamma`-rays
Cathode rays
electromagnetic wave
positively charged
negatively charged
neutral
Neither electric field nor magnetic field
Both electric field and magnetic field
Only electric field
Only magnetic field
Millikan
Rutherford
W crookes
J.J. Thomson
Alpha particle-neutron-protonelectron
Proton-electron-neutron-alpha particle
Electron-proton-neutron-alpha particle
Neutron-proton-electron-alpha particle
will remain same
Will be doubled
will be halved
Will be four times of the original wavelength
No medium is required for their propagation
They obey laws of reflection
They travel with the speed of light waves
They are longitudinal in nature
Assertion : Radio does not work in a moving train unless aerial is put outside the window.
Reason : The train compartment acts as a hollow cylinder and charge is centred which does not allow radio to work.
Only by radio and television transmitting antennas
Only by bodies at temperature. higher than their surroundings
Only by red-hot bodies
By all bodies
is longer than the wavelength of sound waves
is longer than the wavelength of the yellow sodium light
is longer than the wavelength of radio waves
is of the order of `0.1` nanometer
`10^3-10^4` Hz
`10^8-10^9` Hz
`10^13-10^14` Hz
`10^16-10^17` Hz
Column I | Column II | ||
---|---|---|---|
(A) | Explanation of the photoelectric effect | (1) | J J Thomson |
(B) | Discovery of a comet | (2) | Robert Millikan |
(C) | Measurement of the electronic charge | (3) | Einstein |
(D) | Thermoelectricity | (4) | Edmund Halley |
(5) | Seebeck |
`A-> 3, quad B-> 4, quad C->1, quad D->2`
`A-> 4, quad B-> 3, quad C->2, quad D->1`
`A-> 2, quad B-> 3, quad C->4, quad D->5`
`A-> 3, quad B-> 4, quad C->2, quad D->5`
Column I | Column II | ||
---|---|---|---|
(Type of Electromagnetic Radiation) | (Approximate Wavelength in Metre) | ||
(A) | Infrared radiation | (1) | `10^(-12)` |
(B) | X-rays | (2) | `10^(-5)` |
(C) | Ultraviolet radiation | (3) | `10^(-10)` |
(D) | Gamma rays | (4) | `10^(-8)` |
`A-> 3, quad B-> 4, quad C->1, quad D->2`
`A-> 4, quad B-> 3, quad C->2, quad D->1`
`A-> 2, quad B-> 3, quad C->4, quad D->1`
`A-> 4, quad B-> 1, quad C->2, quad D->3`
Cathode-rays
X-rays
Gamma-rays
Infrared-rays
Photons
Protons
Neutrons
Electron
4 < 3 < 1 < 2
4 < 1 < 2 < 3
3 < 2 < 1 < 4
3 < 1 < 2 < 4
depends on its wavelength
depend on its frequency
depend on its intensity
neither depend on its wavelength, frequency nor intensity
`1 mm`
`1 cm`
`1` micron
`1 overset@A`
heat is generated at the target
heat is absorbed at the target
the temperature of the target remains constant
brilliant light is seen al the target
Beta rays and gamma rays
Cathode rays and X-rays
Alpha rays and beta rays
X-rays and gamma rays
is < 1
is > 1
is 1
depends upon tile ratio of their frequencies
X-ray
Gamma ray
Infrared
Ultraviolet
low cost
free from virus threat
high data carrying capacity
faster than light communication of signals
Radiowaves
Infrared waves
Ultraviolet waves
Miicrowave
Heat absorbed by B is double because its mass is double
Heat absorbed by A is double because its mass is equal
Heat absorbed by both A and B is equal because the quantity of heat absorbed does not depend upon mass
Heat absorbed by B is four times than the heat absorbed by A because the quantity of heat absorbed is proportional to square of the mass
light is most scattered by fog
has the longest wavelength among all colours
has the longest wavelength among all colours except red and oran[Je, but the red colour is already used for brake light and stop light whereas orange colour is avoided due to its similarity with red
has the shortest wavelength among all colours not already reserved for other purpose