MCQ
Relation between the colour and the temperature of a star is given by
- ✓Wein's displacement law
- BPlanck's law
- CHubble's law
- DFraunhofer diffraction law
✓
Answer
Correct option: A.
Wein's displacement law
(a)
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
To make a $\text{PN}$ junction conducting
→If the radius of the earth were to shrink by $1 \%$ its mass remaining the same, the acceleration due to gravity on the earth's surface would
→In hydrogen atom, the electron is making $6.6 \times {10^{15}}\,rev/\sec $ around the nucleus in an orbit of radius $0.528\, \mathop A\limits^o $. The magnetic moment $(A - {m^2})$ will be
→If an object moves towards a plane mirror with a speed $v$ at an angle $\theta$ to the perpendicular to the plane of the mirror, find the relative velocity between the object and the image
→
A person uses spectacles of power $+2 D$. He is suffering from
→The time period of a freely suspended magnet is 4 seconds. If it is broken in length into two equal parts and one part is suspended in the same way, then its time period will be
A string of negligible mass going over a clamped pulley of mass $m$ supports a block of mass $M$ as shown in the figure. The force on the pulley by the clamp is given by
→
A light spring balance hangs from the hook of the other light spring balance and a block of mass $M kg$ hangs from the former one. Then the true statement about the scale reading is
→Reason of weightlessness in a satellite is
A coil takes $15 min$ to boil a certain amount of water, another coil takes $20 min$ for the same process. Time taken to boil the same amount of water when both coil are connected in series
→