MCQ
A white screen illuminated by green and red light appears to be
- AGreen
- BRed
- ✓Yellow
- DWhite
✓
Answer
Correct option: C.
Yellow
c
( c)From colour triangle
( c)From colour triangle
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
$\mathrm{M}_{\mathrm{x}}$ and $\mathrm{M}_{\mathrm{y}}$ denote the atomic masses of the parent and the daughter nuclei respectively in a radioactive decay. The $Q -$value for a $\beta^{-}$decay is $Q_1$ and that for a $\beta^{+}$decay is $Q_2$. If me denotes the mass of an electron, then which of the following statements is correct?
→$A$ and $B$ are two concentric spheres. If $A$ is given a charge $Q$ while $B$ is earthed as shown
→Two magnets are held together in a vibration magnetometer and are allowed to oscillate in the earth’s magnetic field. With like poles of magnets together, $12\, oscillations$ per minute are made but for unlike poles together only $4\, oscillations$ per minute are executed. The ratio of their magnetic moments is
→Air is pushed into a soap, bubble of radius r to double its radius. If the surface tension of the soap solution is S, the work done in the process is:
A long magnet is cut in two parts in such a way that the ratio of their lengths is $ 2 : 1. $ The ratio of pole strengths of both the section is
→For the logic circuit shown, the truth table is :
The horizontal component of the earth’s magnetic field at a place is $3 × 10^{-4}\ T$ and the dip is $tan^{-1}(4/3)$ . A thin metal rod of length $0.25\ m$ placed in the north-south position is moved at a constant speed of $10\ cm/s$ towards the east. Find the $e.m.f.$ induced in the rod across its ends....$\mu\ V$
→In the above figure $D$ and $E$ respectively represent
→Assertion : If a proton and an electron are placed in the same uniform electric field. They experience different acceleration.
Reason : Electric force on a test charge is independent of its mass.
Reason : Electric force on a test charge is independent of its mass.
Direction of induced emf is determined by: