Login
Remember
Register
Home
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Users
Ask a Question
User varun
Wall
Recent activity
All questions
All answers
Ask a Question
Questions by varun
0
votes
0
answers
Photon is quantum of radiation with energy E = hν where ν is frequency and h is Planck’s constant. The dimensions of h are the same as that
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#mcq2
0
votes
0
answers
If Planck’s constant (h ) and speed of light in vacuum (c ) are taken as two fundamental quantities, which one of the following can, in addition, be taken to express length, mass and time in terms of the three chosen fundamental
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#mcq2
0
votes
0
answers
Which of the following ratios express
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#mcq2
0
votes
0
answers
Which of the following are not a unit of
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#mcq2
0
votes
0
answers
Why do we have different units for the same physical
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#sub
0
votes
0
answers
The radius of atom is of the order of 1 Å and radius of nucleus is of the order of fermi. How many magnitudes higher is the volume of atom as compared to the volume of
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#sub
0
votes
0
answers
Name the device used for measuring the mass of atoms and
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#sub
0
votes
0
answers
Express unified atomic mass unit in
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#sub
0
votes
0
answers
A function f (θ ) is defined as: `f(θ)=1- θ+θ^2/(2!)-θ^3/(3!)+θ^4/(4!)........` Why is it necessary for q to be a dimensionless
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#sub
0
votes
0
answers
Why length, mass and time are chosen as base quantities in
asked
Mar 19, 2022
in
11th Physics
marks1
chapter2
#sub
0
votes
0
answers
The earth-moon distance is about 60 earth radius. What will be the diameter of the earth (approximately in degrees) as seen from the
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
Moon is seen to be of `(1⁄2)^°` diameter from the earth. What must be the relative size compared to the
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
From parallax measurement, the sun is found to be at a distance of about 400 times the earth-moon distance. Estimate the ratio of sun-earth
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
Which of the following time measuring devices is most precise? A wall
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
Which of the following time measuring devices is most precise? A stop
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
Which of the following time measuring devices is most precise? A digital
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
Which of the following time measuring devices is most precise? An atomic clock. Give reason for your
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
The distance of a galaxy is of the order of 1025 m. Calculate the order of magnitude of time taken by light to reach us from the
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
The vernier scale of a travelling microscope has 50 divisions which coincide with 49 main scale divisions. If each main scale division is 0.5 mm, calculate the minimum inaccuracy in the measurement of
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
0
votes
0
answers
During a total solar eclipse the moon almost entirely covers the sphere of the sun. Write the relation between the distances and sizes of the sun and
asked
Mar 19, 2022
in
11th Physics
marks2
chapter2
#sub
Page:
« prev
1
...
98
99
100
101
102
103
104
...
169
next »
Categories
All categories
Maths
(8.6k)
Science
(14)
Physics
(3.4k)