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Joule-second is the unit of:
Which of the following statements is correct?
A screw gauge has the least count of $0.01\text{ mm}$ and there are $50$ divisions in its circular scale. The pitch of the screw gauge is:
The angle of $1'$ (minute of an arc) in radian is nearly equal to:
A Screw Gauge gives the following readings when used to measure the diameter of a wire. Main scale reading = $0.0\text{ mm}$ Circular scale reading = $52\text{ divisions}$ Given that: $1\text{ mm}$ on the main scale corresponds to $100\text{ divisions}$ of the circular scale. The diameter of the wire from the above data is:
A capillary tube of radius $r$ is immersed in water and water rises in it to a height $h$. The mass of the water in the capillary is 5 g. Another capillary tube of radius $2r$ is immersed in water. The mass of water that will rise in this tube is:
A monochromatic light of frequency 500 THz is incident on the slits of Young's double slit experiment. If the distance between the slits is 0.2 mm and the screen is placed at a distance 1 m from the slits, the width of 10 fringes will be:
An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, (nearly) : ($m_e = 9 \times 10^{-31}$ kg)
Given below are two statements: Assertion (A): A glass tube partially filled with water represents an open organ pipe. Reason (R): The open end corresponds to an antinode and the end in contact with water, to a node. In the light of the above statements, choose the correct answer from the options given below:
Measuring Zeta potential is useful in determining which property of colloidal solution?
Dimensional formula of capacitance is:
A non-reducing sugar among the following is:
A man drops a ball downwards from the roof of a tower of height $400 \text{ m}$. At the same time, another ball is thrown upwards with a velocity $50 \text{ m/s}$ from the surface of the tower. They will meet at which height from the surface of the tower?
A compound is formed by cation C and anion A. The anions form hexagonal close packed (hcp) lattice and the cations occupy $75\%$ of octahedral voids. The formula of the compound is :
Which one of the following does not have the same dimensions?
A parallel plate condenser has a uniform electric field E (V/m) in the space between the plates. If the distance between the plates is d (m) and area of each plate is A (m²), the energy (joule) stored in the condenser is:
Four electric charges +q, +q, -q and -q are placed at the corners of a square of side 2L (see figure). The electric potential at point A, mid-way between the two charges +q and +q, is
Tesla is a unit for measuring:
Three charges, each +q, are placed at the corners of an isosceles triangle ABC of sides BC and AC equal to 2a. D and E are the mid points of BC and CA. The work done in taking a charge Q from D to E is:
$X = 3YZ^2$, find the dimension of $Y$ in (MKSA) system, if $X$ and $Z$ are the dimensions of capacity and magnetic field respectively.