Question
'Albedo' is
✓
Answer
(a)Reflecting power of a heavenly body is called albedo.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A plane progressive wave is represented by the equation $y = 0.1\sin \left( {200\pi t - \frac{{20\pi x}}{{17}}} \right)$ where y is displacement in $m$, $ t$ in second and $x$ is distance from a fixed origin in meter. The frequency, wavelength and speed of the wave respectively are
→According to the experiment of Ingen Hausz the relation between the thermal conductivity of a metal rod is $ K$ and the length of the rod whenever the wax melts is
→An ideal monoatomic gas is confined in a cylinder by a spring loaded piston of cross section $8.0\times10^{-3}\, m^2$ . Initially the gas is at $300\, K$ and occupies a volume of $2.4\times10^{-3}\, m^3$ and the spring is in its relaxed state as shown in figure. The gas is heated by a small heater until the piston moves out slowly by $0.1\, m$. The force constant of the spring is $8000\, N/m$ and the atmospheric pressure is $1.0\times10^5\, N/m^2$ . The cylinder and the piston are thermally insulated. The piston and the spring are massless and there is no friction between the piston and the cylinder. The final temperature of the gas will be: (Neglect the heat loss through the lead wires of the heater . The heat capacity of the heater coil is also negligible)
→A shell initially at rest explodes into two pieces of equal mass, then the two pieces will
An $NPN$ transistor is used in common emitter configuration as an amplifier with $1\,k\Omega $ load resistance. Signal voltage of $10\,mV$ is applied across the base emitter. This produces a $3\,mA$ change in the collector current and $15\,\mu A$ change in the base current of the amplifier. The input resistance and voltage gain are
→A big ball of mass $M$, moving with velocity $u$ strikes a small ball of mass $m$, which is at rest. Finally small ball obtains velocity $u$ and big ball $v$. Then what is the value of $v$
→The circuit shown in the figure contains two diodes each with a forward resistance of $30\,\Omega $ and with infinite backward resistance. If the battery is $3\, V$, the current through the $50\,\Omega $ resistance (in ampere) is
→A capillary type tube $AB$ is connected to a manometer $M$ as shown in the figure. Stopper $S$ controls the flow of air. $AB$ is dipped into a soap solution where surface tension is $T$ . On opening the stopper for a while, a bubble is formed at $B$ end of the manometer and the level difference in manometer limbs is $h$ . If $P$ is the density of manometer soap solution and $r$ the radius of curvature of bubble, then the surface tension $T$ of the liquid is given by ...
→A particle executing simple harmonic motion with amplitude of $0.1 \,m$. At a certain instant when its displacement is $0.02 \,m$, its acceleration is $0.5 \,m/s^2$. The maximum velocity of the particle is (in $m/s$)
→A student connects a long air cored - coil of manganin wire to a $100\,\, V$ $D.C.$ supply and records a current of $25\, amp$. When the same coil is connected across $100\, V$. $50\,Hz$ $a.c.$ the current reduces to $20\, A$ , the reactance of the coil is......$\Omega$
→